diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/AnalysisServerDriver.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/AnalysisServerDriver.java
index ca7723184..c21773ead 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/AnalysisServerDriver.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/AnalysisServerDriver.java
@@ -6,6 +6,7 @@ import java.text.SimpleDateFormat;
 import java.util.Date;
 
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.Configured;
 import org.apache.hadoop.hbase.client.Scan;
@@ -21,7 +22,7 @@ import org.slf4j.LoggerFactory;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.Categorize2ChainMapper;
 import com.ai.cloud.skywalking.analysis.categorize2chain.Categorize2ChainReducer;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
 import com.ai.cloud.skywalking.analysis.config.Config;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainMapper.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainMapper.java
index a752fb298..f80d3a1d2 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainMapper.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainMapper.java
@@ -19,9 +19,10 @@ import org.slf4j.LoggerFactory;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessChain;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
 import com.ai.cloud.skywalking.protocol.Span;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainReducer.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainReducer.java
index f52af2e7f..1623ca84a 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainReducer.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/Categorize2ChainReducer.java
@@ -9,7 +9,9 @@ import org.apache.hadoop.mapreduce.Reducer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainRelationship;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainSummaryWithoutRelationship;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/DBCallChainInfoDao.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/DBCallChainInfoDao.java
index d0cd5510d..9a587c7a3 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/DBCallChainInfoDao.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/DBCallChainInfoDao.java
@@ -1,6 +1,7 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainDetail;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.analysis.config.Config;
 
 import org.slf4j.Logger;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SpanEntry.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SpanEntry.java
index fa3636dcb..3df7b4758 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SpanEntry.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SpanEntry.java
@@ -1,6 +1,6 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.protocol.CallType;
 import com.ai.cloud.skywalking.protocol.Span;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/CategorizedChainInfo.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/CategorizedChainInfo.java
similarity index 91%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/CategorizedChainInfo.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/CategorizedChainInfo.java
index 50b7b7246..48f7ac12f 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/CategorizedChainInfo.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/CategorizedChainInfo.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainDetail.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainDetail.java
similarity index 84%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainDetail.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainDetail.java
index e94d5509b..34beb6dfe 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainDetail.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainDetail.java
@@ -1,7 +1,8 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.DBCallChainInfoDao;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.analysis.config.Config;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
 import com.google.gson.Gson;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummary.java
similarity index 94%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummary.java
index f67b71ea9..05e81815a 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummary.java
@@ -1,9 +1,9 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummaryValue.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummaryValue.java
similarity index 90%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummaryValue.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummaryValue.java
index b3e91788f..0d69053df 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainNodeSpecificTimeWindowSummaryValue.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainNodeSpecificTimeWindowSummaryValue.java
@@ -1,6 +1,6 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 
 public class ChainNodeSpecificTimeWindowSummaryValue {
     private long totalCall;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainRelationship.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainRelationship.java
similarity index 97%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainRelationship.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainRelationship.java
index b4478f162..e7e88516e 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainRelationship.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainRelationship.java
@@ -1,4 +1,4 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
 import java.io.IOException;
 import java.sql.SQLException;
@@ -14,7 +14,7 @@ import org.apache.hadoop.hbase.client.Put;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
 import com.google.gson.GsonBuilder;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSpecificTimeWindowSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSpecificTimeWindowSummary.java
similarity index 94%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSpecificTimeWindowSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSpecificTimeWindowSummary.java
index aeaeb780f..5c552ec00 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSpecificTimeWindowSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSpecificTimeWindowSummary.java
@@ -1,8 +1,9 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.hbase.client.Put;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSummaryWithoutRelationship.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSummaryWithoutRelationship.java
similarity index 90%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSummaryWithoutRelationship.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSummaryWithoutRelationship.java
index 2c43f2e0c..f047946b1 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/ChainSummaryWithoutRelationship.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/ChainSummaryWithoutRelationship.java
@@ -1,8 +1,10 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.DBCallChainInfoDao;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
+
 import org.apache.hadoop.hbase.client.Put;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/UncategorizeChainInfo.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/UncategorizeChainInfo.java
similarity index 88%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/UncategorizeChainInfo.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/UncategorizeChainInfo.java
index f938a8e2e..1890b8c0b 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/UncategorizeChainInfo.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/entity/UncategorizeChainInfo.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
 import com.google.gson.GsonBuilder;
 import com.google.gson.annotations.Expose;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/SpanNodeProcessFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/SpanNodeProcessFilter.java
index 03782b8de..eb8b54409 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/SpanNodeProcessFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/SpanNodeProcessFilter.java
@@ -1,8 +1,8 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 
 public abstract class SpanNodeProcessFilter {
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/AppendBusinessKeyFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/AppendBusinessKeyFilter.java
index cb136f175..4becf8e06 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/AppendBusinessKeyFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/AppendBusinessKeyFilter.java
@@ -1,9 +1,9 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter.impl;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 
 public class AppendBusinessKeyFilter extends SpanNodeProcessFilter {
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/CopyAttrFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/CopyAttrFilter.java
index e577a2ab0..92a615216 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/CopyAttrFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/CopyAttrFilter.java
@@ -1,9 +1,9 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter.impl;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 
 public class CopyAttrFilter extends SpanNodeProcessFilter {
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ProcessCostTimeFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ProcessCostTimeFilter.java
index 5b188e7de..95dd78ce0 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ProcessCostTimeFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ProcessCostTimeFilter.java
@@ -1,9 +1,9 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter.impl;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 
 public class ProcessCostTimeFilter extends SpanNodeProcessFilter {
 	@Override
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ReplaceAddressFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ReplaceAddressFilter.java
index 87e47d43c..9c12fafc7 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ReplaceAddressFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/ReplaceAddressFilter.java
@@ -1,9 +1,9 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter.impl;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 
 public class ReplaceAddressFilter extends SpanNodeProcessFilter {
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/TokenGenerateFilter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/TokenGenerateFilter.java
index b008ce993..ac8c6aa0f 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/TokenGenerateFilter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/filter/impl/TokenGenerateFilter.java
@@ -1,9 +1,9 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.filter.impl;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.SpanEntry;
 import com.ai.cloud.skywalking.analysis.categorize2chain.filter.SpanNodeProcessFilter;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainNode;
+import com.ai.cloud.skywalking.analysis.categorize2chain.util.SubLevelSpanCostCounter;
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.TokenGenerator;
 
 public class TokenGenerateFilter extends SpanNodeProcessFilter {
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainInfo.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainInfo.java
similarity index 98%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainInfo.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainInfo.java
index f4be27097..ae8d0252a 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainInfo.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainInfo.java
@@ -1,4 +1,4 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain.model;
+package com.ai.cloud.skywalking.analysis.categorize2chain.po;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.TokenGenerator;
 import com.google.gson.Gson;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainNode.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainNode.java
similarity index 97%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainNode.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainNode.java
index 8664ad037..5349bd986 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/model/ChainNode.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/po/ChainNode.java
@@ -1,4 +1,4 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain.model;
+package com.ai.cloud.skywalking.analysis.categorize2chain.po;
 
 import com.google.gson.GsonBuilder;
 import com.google.gson.annotations.Expose;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/HBaseUtil.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/HBaseUtil.java
index 47544b93e..2156fb1ba 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/HBaseUtil.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/HBaseUtil.java
@@ -1,13 +1,19 @@
 package com.ai.cloud.skywalking.analysis.categorize2chain.util;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.*;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.CategorizedChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainRelationship;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.UncategorizeChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
 import com.ai.cloud.skywalking.analysis.chain2summary.ChainRelationship4Search;
-import com.ai.cloud.skywalking.analysis.chain2summary.model.*;
+import com.ai.cloud.skywalking.analysis.chain2summary.entity.*;
 import com.ai.cloud.skywalking.analysis.config.Config;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
 import com.google.gson.Gson;
 import com.google.gson.reflect.TypeToken;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.*;
 import org.apache.hadoop.hbase.client.*;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SubLevelSpanCostCounter.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/SubLevelSpanCostCounter.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SubLevelSpanCostCounter.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/SubLevelSpanCostCounter.java
index 76d612876..90f08ae5a 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/SubLevelSpanCostCounter.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/categorize2chain/util/SubLevelSpanCostCounter.java
@@ -1,4 +1,4 @@
-package com.ai.cloud.skywalking.analysis.categorize2chain;
+package com.ai.cloud.skywalking.analysis.categorize2chain.util;
 
 import java.util.HashMap;
 import java.util.Map;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryMapper.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryMapper.java
index ab6ed26a1..0bafb3576 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryMapper.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryMapper.java
@@ -1,6 +1,8 @@
 package com.ai.cloud.skywalking.analysis.chain2summary;
 
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
+
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryReducer.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryReducer.java
index 6d1045ff9..c463b2c2d 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryReducer.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Chain2SummaryReducer.java
@@ -1,6 +1,8 @@
 package com.ai.cloud.skywalking.analysis.chain2summary;
 
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
+
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.Text;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Summary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Summary.java
index b335e1197..df029aacf 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Summary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/Summary.java
@@ -4,6 +4,9 @@ import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
+import com.ai.cloud.skywalking.analysis.chain2summary.entity.ChainSummaryWithRelationship;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
+
 public class Summary {
     private Map<String, ChainSummaryWithRelationship> summaryWithRelationshipMap;
 
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificDaySummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificDaySummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificDaySummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificDaySummary.java
index 58d6d447b..dafbbf633 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificDaySummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificDaySummary.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummaryValue;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummaryValue;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificHourSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificHourSummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificHourSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificHourSummary.java
index 77ad858c6..50f3406c2 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificHourSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificHourSummary.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummaryValue;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummaryValue;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMinSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMinSummary.java
similarity index 85%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMinSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMinSummary.java
index 4f56567c9..b56c40cee 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMinSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMinSummary.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummaryValue;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummaryValue;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMonthSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMonthSummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMonthSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMonthSummary.java
index 4b9aae253..d39bc6d42 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainNodeSpecificMonthSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainNodeSpecificMonthSummary.java
@@ -1,7 +1,7 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummaryValue;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummaryValue;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificDaySummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificDaySummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificDaySummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificDaySummary.java
index 51a8ce024..852c590b0 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificDaySummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificDaySummary.java
@@ -1,8 +1,9 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.ChainSpecificTimeSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.hbase.client.Put;
 
 import java.util.HashMap;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificHourSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificHourSummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificHourSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificHourSummary.java
index e38a763e0..b8b1da14f 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificHourSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificHourSummary.java
@@ -1,8 +1,9 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.ChainSpecificTimeSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.hbase.client.Put;
 
 import java.util.HashMap;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMinSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMinSummary.java
similarity index 87%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMinSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMinSummary.java
index a1a336894..3d32566f4 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMinSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMinSummary.java
@@ -1,8 +1,9 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.ChainSpecificTimeSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.hbase.client.Put;
 
 import java.util.HashMap;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMonthSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMonthSummary.java
similarity index 86%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMonthSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMonthSummary.java
index 8105de114..478a82396 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/model/ChainSpecificMonthSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSpecificMonthSummary.java
@@ -1,8 +1,9 @@
-package com.ai.cloud.skywalking.analysis.chain2summary.model;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.ChainSpecificTimeSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
+
 import org.apache.hadoop.hbase.client.Put;
 
 import java.util.Map;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSummaryWithRelationship.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSummaryWithRelationship.java
similarity index 91%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSummaryWithRelationship.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSummaryWithRelationship.java
index 45f8023af..ffaafb298 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSummaryWithRelationship.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/entity/ChainSummaryWithRelationship.java
@@ -1,10 +1,7 @@
-package com.ai.cloud.skywalking.analysis.chain2summary;
+package com.ai.cloud.skywalking.analysis.chain2summary.entity;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.util.HBaseUtil;
-import com.ai.cloud.skywalking.analysis.chain2summary.model.ChainSpecificDaySummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.model.ChainSpecificHourSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.model.ChainSpecificMinSummary;
-import com.ai.cloud.skywalking.analysis.chain2summary.model.ChainSpecificMonthSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 
 import java.io.IOException;
 import java.util.HashMap;
diff --git a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSpecificTimeSummary.java b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/po/ChainSpecificTimeSummary.java
similarity index 96%
rename from skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSpecificTimeSummary.java
rename to skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/po/ChainSpecificTimeSummary.java
index 3a46c3be0..ef9922d23 100644
--- a/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/ChainSpecificTimeSummary.java
+++ b/skywalking-analysis/src/main/java/com/ai/cloud/skywalking/analysis/chain2summary/po/ChainSpecificTimeSummary.java
@@ -1,10 +1,11 @@
-package com.ai.cloud.skywalking.analysis.chain2summary;
+package com.ai.cloud.skywalking.analysis.chain2summary.po;
 
-import com.ai.cloud.skywalking.analysis.categorize2chain.ChainNodeSpecificTimeWindowSummary;
+import com.ai.cloud.skywalking.analysis.categorize2chain.entity.ChainNodeSpecificTimeWindowSummary;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import com.google.gson.reflect.TypeToken;
+
 import org.apache.hadoop.io.Writable;
 
 import java.io.DataInput;
diff --git a/skywalking-analysis/src/test/java/com/ai/cloud/skywalking/analysis/mapper/CallChainMapperTest.java b/skywalking-analysis/src/test/java/com/ai/cloud/skywalking/analysis/mapper/CallChainMapperTest.java
index 3e431654d..0fd798ae7 100644
--- a/skywalking-analysis/src/test/java/com/ai/cloud/skywalking/analysis/mapper/CallChainMapperTest.java
+++ b/skywalking-analysis/src/test/java/com/ai/cloud/skywalking/analysis/mapper/CallChainMapperTest.java
@@ -3,9 +3,9 @@ package com.ai.cloud.skywalking.analysis.mapper;
 
 import com.ai.cloud.skywalking.analysis.categorize2chain.Categorize2ChainMapper;
 import com.ai.cloud.skywalking.analysis.categorize2chain.Categorize2ChainReducer;
-import com.ai.cloud.skywalking.analysis.categorize2chain.model.ChainInfo;
+import com.ai.cloud.skywalking.analysis.categorize2chain.po.ChainInfo;
 import com.ai.cloud.skywalking.analysis.chain2summary.Chain2SummaryReducer;
-import com.ai.cloud.skywalking.analysis.chain2summary.ChainSpecificTimeSummary;
+import com.ai.cloud.skywalking.analysis.chain2summary.po.ChainSpecificTimeSummary;
 import com.ai.cloud.skywalking.analysis.config.ConfigInitializer;
 import com.ai.cloud.skywalking.analysis.config.HBaseTableMetaData;
 import com.ai.cloud.skywalking.protocol.Span;