diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/BaseInvokeMonitor.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/BaseInvokeMonitor.java
index 7b6b63b19..53e9db343 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/BaseInvokeMonitor.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/BaseInvokeMonitor.java
@@ -25,18 +25,18 @@ public abstract class BaseInvokeMonitor {
 
     private static Set<String> exclusiveExceptionSet = null;
 
-
     protected ContextData beforeInvoke(Span spanData, Identification id) {
         if (Config.BuriedPoint.PRINTF) {
-            logger.debug("TraceId:" + spanData.getTraceId() + "\tviewpointId:" + id.getViewPoint() + "\tParentLevelId:" + spanData.getParentLevel() + "\tLevelId:" + spanData
-                    .getLevelId());
+            logger.debug("TraceId:" + spanData.getTraceId() + "\tviewpointId:" + id.getViewPoint() + "\tParentLevelId:"
+                    + spanData.getParentLevel() + "\tLevelId:" + spanData.getLevelId());
         }
 
 
         if (!spanData.isValidate()) {
             // 根据SpanData生成RequestSpan，并保存
             ContextBuffer.save(RequestSpan.RequestSpanBuilder.
-                    newBuilder(spanData).callType(id.getCallType()).viewPoint(id.getViewPoint()).spanTypeDesc(id.getSpanTypeDesc()).build());
+                    newBuilder(spanData).callType(id.getCallType()).viewPoint(id.getViewPoint())
+                    .spanTypeDesc(id.getSpanTypeDesc()).build());
         }
 
         // 将新创建的Context存放到ThreadLocal栈中。
@@ -46,10 +46,10 @@ public abstract class BaseInvokeMonitor {
     }
 
     protected void afterInvoke() {
-       afterInvoke(null);
+        afterInvoke(null);
     }
 
-    protected void afterInvoke(String  resultJson) {
+    protected void afterInvoke(String invokeResult) {
         try {
             if (!AuthDesc.isAuth())
                 return;
@@ -60,15 +60,11 @@ public abstract class BaseInvokeMonitor {
                 return;
             }
 
-            // 追加Result JSon
-            if (resultJson != null){
-                spanData.appendParameter("Result", resultJson);
-            }
+            spanData.setInvokeResult(invokeResult);
 
             if (Config.BuriedPoint.PRINTF) {
-                logger.debug(
-                        "TraceId-ACK:" + spanData.getTraceId()  + "\tParentLevelId:" + spanData.getParentLevel() + "\tLevelId:" + spanData
-                                .getLevelId() + "\tbusinessKey:" + spanData.getParameters());
+                logger.debug("TraceId-ACK:" + spanData.getTraceId() + "\tParentLevelId:" + spanData.getParentLevel()
+                        + "\tLevelId:" + spanData.getLevelId() + "\tbusinessKey:" + spanData.getParameters());
             }
             // 生成并保存到缓存
             ContextBuffer.save(new AckSpan(spanData));
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/LocalMethodInvokeMonitor.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/LocalMethodInvokeMonitor.java
index cd96235e4..b77844056 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/LocalMethodInvokeMonitor.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/LocalMethodInvokeMonitor.java
@@ -32,8 +32,8 @@ public class LocalMethodInvokeMonitor extends BaseInvokeMonitor {
         super.afterInvoke();
     }
 
-    public void afterInvoke(String resultJsonStr){
-        super.afterInvoke(resultJsonStr);
+    public void afterInvoke(String invokeResult){
+        super.afterInvoke(invokeResult);
     }
 
 
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCClientInvokeMonitor.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCClientInvokeMonitor.java
index 831d3d560..a6f63310d 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCClientInvokeMonitor.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCClientInvokeMonitor.java
@@ -18,7 +18,7 @@ public class RPCClientInvokeMonitor extends BaseInvokeMonitor {
     private static Logger logger = LogManager
             .getLogger(RPCClientInvokeMonitor.class);
 
-    public ContextData traceBeforeInvoke(Identification id) {
+    public ContextData beforeInvoke(Identification id) {
         try {
             if (!AuthDesc.isAuth())
                 return new EmptyContextData();
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCServerInvokeMonitor.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCServerInvokeMonitor.java
index 532446c1a..1d6c48956 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCServerInvokeMonitor.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/invoke/monitor/RPCServerInvokeMonitor.java
@@ -15,7 +15,7 @@ public class RPCServerInvokeMonitor extends BaseInvokeMonitor {
     private static Logger logger = LogManager
             .getLogger(RPCServerInvokeMonitor.class);
 
-    public void traceBeforeInvoke(ContextData context, Identification id) {
+    public void beforeInvoke(ContextData context, Identification id) {
         try {
             if (!AuthDesc.isAuth())
                 return;
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/model/Identification.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/model/Identification.java
index 62c988257..3a22f6c12 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/model/Identification.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/model/Identification.java
@@ -45,6 +45,7 @@ public class Identification {
 
     public static class IdentificationBuilder {
         private Identification sendData;
+        private int parameterIdx = 0;
 
         IdentificationBuilder() {
             sendData = new Identification();
@@ -59,11 +60,18 @@ public class Identification {
             return this;
         }
 
-        public IdentificationBuilder appendParameter(String key, String value) {
+        public IdentificationBuilder setParameter(String key, String value) {
             sendData.parameters.put(key, value);
             return this;
         }
 
+        public IdentificationBuilder addParameter(String value){
+            parameterIdx++;
+            sendData.parameters.put("_" + parameterIdx, value);
+            return this;
+        }
+
+
         public IdentificationBuilder businessKey(String businessKey) {
             sendData.businessKey = businessKey;
             return this;
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/ClassTransformer.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/ClassTransformer.java
index d0c7c5c39..3c831e146 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/ClassTransformer.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/ClassTransformer.java
@@ -13,7 +13,7 @@ import java.security.ProtectionDomain;
 
 public class ClassTransformer implements ClassFileTransformer {
 
-    private Logger logger = LogManager.getLogger(ClassTransformer.class);
+    private static Logger logger = LogManager.getLogger(ClassTransformer.class);
 
     private String interceptorPackage;
 
@@ -62,7 +62,7 @@ public class ClassTransformer implements ClassFileTransformer {
             }
             return ctClass.toBytecode();
         } catch (Exception e) {
-            logger.error("Failed to transform class" + className, e);
+            logger.error("Failed to transform class " + className, e);
             return classfileBuffer;
         }
 
diff --git a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/MethodInterceptor.java b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/MethodInterceptor.java
index 6fcdde96f..84eebf99e 100644
--- a/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/MethodInterceptor.java
+++ b/skywalking-collector/skywalking-api/src/main/java/com/ai/cloud/skywalking/transformer/MethodInterceptor.java
@@ -7,7 +7,17 @@ import com.ai.cloud.skywalking.protocol.common.CallType;
 import com.google.gson.Gson;
 
 public class MethodInterceptor {
+    public static IBuriedPointType METHOD_INVOKE_BURIEDPOINT = new IBuriedPointType() {
+        @Override
+        public String getTypeName() {
+            return "LOCAL";
+        }
 
+        @Override
+        public CallType getCallType() {
+            return CallType.SYNC;
+        }
+    };
 
     public void before(Class originClass, Class[] parametersType, Object[] allArgument, Object superCall,
             String methodName) {
@@ -15,28 +25,19 @@ public class MethodInterceptor {
         Identification.IdentificationBuilder identificationBuilder = Identification.newBuilder();
         identificationBuilder.viewPoint(generateViewPoint(originClass, parametersType, methodName));
         appendingParameters(allArgument, identificationBuilder);
-        identificationBuilder.spanType(new IBuriedPointType() {
-            @Override
-            public String getTypeName() {
-                return "LOCAL";
-            }
-
-            @Override
-            public CallType getCallType() {
-                return CallType.SYNC;
-            }
-        });
+        identificationBuilder.spanType(METHOD_INVOKE_BURIEDPOINT);
 
         localMethodInvokeMonitor.beforeInvoke(identificationBuilder.build());
 
     }
 
     private void appendingParameters(Object[] allArgument, Identification.IdentificationBuilder identificationBuilder) {
+        Gson gson = new Gson();
         for (int i = 0; i < allArgument.length; i++) {
             try {
-                identificationBuilder.appendParameter("P" + i, new Gson().toJson(allArgument[i]));
+                identificationBuilder.addParameter(gson.toJson(allArgument[i]));
             } catch (Exception e) {
-                identificationBuilder.appendParameter("P" + i, "Cannot convert parameter");
+                identificationBuilder.addParameter("N/A");
             }
         }
     }
@@ -62,7 +63,7 @@ public class MethodInterceptor {
             try {
                 resultJson = new Gson().toJson(result);
             } catch (Exception e) {
-                resultJson = "Can not convert result";
+                resultJson = "N/A";
             }
         }
 
diff --git a/skywalking-collector/skywalking-api/src/test/java/test/ai/cloud/api/TimeTest.java b/skywalking-collector/skywalking-api/src/test/java/test/ai/cloud/api/TimeTest.java
index 44bc7ed43..ec3183cbc 100644
--- a/skywalking-collector/skywalking-api/src/test/java/test/ai/cloud/api/TimeTest.java
+++ b/skywalking-collector/skywalking-api/src/test/java/test/ai/cloud/api/TimeTest.java
@@ -15,7 +15,7 @@ public class TimeTest {
 			IdentificationBuilder builder = Identification
 					.newBuilder()
 					.viewPoint("1111");
-			sender.traceBeforeInvoke(builder.build());
+			sender.beforeInvoke(builder.build());
 			sender.afterInvoke();
 		}
 		long end = System.currentTimeMillis();
diff --git a/skywalking-collector/skywalking-protocol/src/main/java/com/ai/cloud/skywalking/protocol/Span.java b/skywalking-collector/skywalking-protocol/src/main/java/com/ai/cloud/skywalking/protocol/Span.java
index 857bb6a3e..c9a1c9051 100644
--- a/skywalking-collector/skywalking-protocol/src/main/java/com/ai/cloud/skywalking/protocol/Span.java
+++ b/skywalking-collector/skywalking-protocol/src/main/java/com/ai/cloud/skywalking/protocol/Span.java
@@ -11,6 +11,8 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 public class Span {
+    private final static String INVOKE_RESULT_PARAMETER_KEY = "_ret";
+
     private Logger logger = Logger.getLogger(Span.class.getName());
     /**
      * tid，调用链的全局唯一标识
@@ -229,4 +231,8 @@ public class Span {
     public void appendParameter(String key, String value) {
         this.parameters.put(key, value);
     }
+
+    public void setInvokeResult(String result){
+        this.parameters.put(INVOKE_RESULT_PARAMETER_KEY, result);
+    }
 }
diff --git a/skywalking-collector/skywalking-sdk-plugin/dubbo-plugin/src/main/java/com/ai/cloud/skywalking/plugin/dubbo/SWDubboEnhanceFilter.java b/skywalking-collector/skywalking-sdk-plugin/dubbo-plugin/src/main/java/com/ai/cloud/skywalking/plugin/dubbo/SWDubboEnhanceFilter.java
index 81c5e95db..ba8af10de 100644
--- a/skywalking-collector/skywalking-sdk-plugin/dubbo-plugin/src/main/java/com/ai/cloud/skywalking/plugin/dubbo/SWDubboEnhanceFilter.java
+++ b/skywalking-collector/skywalking-sdk-plugin/dubbo-plugin/src/main/java/com/ai/cloud/skywalking/plugin/dubbo/SWDubboEnhanceFilter.java
@@ -24,7 +24,7 @@ public class SWDubboEnhanceFilter implements Filter {
         if (isConsumer) {
             RPCClientInvokeMonitor rpcClientInvokeMonitor = new RPCClientInvokeMonitor();
 
-            ContextData contextData = rpcClientInvokeMonitor.traceBeforeInvoke(createIdentification(invoker, invocation));
+            ContextData contextData = rpcClientInvokeMonitor.beforeInvoke(createIdentification(invoker, invocation));
             String contextDataStr = contextData.toString();
 
             //追加参数
@@ -78,7 +78,7 @@ public class SWDubboEnhanceFilter implements Filter {
                 contextData = new ContextData(contextDataStr);
             }
 
-            rpcServerInvokeMonitor.traceBeforeInvoke(contextData, createIdentification(invoker, invocation));
+            rpcServerInvokeMonitor.beforeInvoke(contextData, createIdentification(invoker, invocation));
 
             try {
                 //执行结果
@@ -138,4 +138,4 @@ public class SWDubboEnhanceFilter implements Filter {
 
         return null;
     }
-}
\ No newline at end of file
+}
diff --git a/skywalking-collector/skywalking-sdk-plugin/httpClient-4.x-plugin/src/main/java/com/ai/cloud/skywalking/httpClient/v4/plugin/HttpClientExecuteInterceptor.java b/skywalking-collector/skywalking-sdk-plugin/httpClient-4.x-plugin/src/main/java/com/ai/cloud/skywalking/httpClient/v4/plugin/HttpClientExecuteInterceptor.java
index 0bfb22165..6c33426a9 100644
--- a/skywalking-collector/skywalking-sdk-plugin/httpClient-4.x-plugin/src/main/java/com/ai/cloud/skywalking/httpClient/v4/plugin/HttpClientExecuteInterceptor.java
+++ b/skywalking-collector/skywalking-sdk-plugin/httpClient-4.x-plugin/src/main/java/com/ai/cloud/skywalking/httpClient/v4/plugin/HttpClientExecuteInterceptor.java
@@ -38,7 +38,7 @@ public class HttpClientExecuteInterceptor implements IntanceMethodsAroundInterce
 				.setHeader(
 						TRACE_HEAD_NAME,
 						"ContextData="
-								+ rpcClientInvokeMonitor.traceBeforeInvoke(
+								+ rpcClientInvokeMonitor.beforeInvoke(
 										Identification
 												.newBuilder()
 												.viewPoint(
diff --git a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/CallableStatementTracing.java b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/CallableStatementTracing.java
index c43e8581c..bfd32fc4b 100644
--- a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/CallableStatementTracing.java
+++ b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/CallableStatementTracing.java
@@ -17,7 +17,7 @@ public class CallableStatementTracing {
                                 String connectInfo, String method, String sql, Executable<R> exec)
             throws SQLException {
         try {
-            rpcClientInvokeMonitor.traceBeforeInvoke(Identification
+            rpcClientInvokeMonitor.beforeInvoke(Identification
                     .newBuilder()
                     .viewPoint(connectInfo)
                     .businessKey(
diff --git a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/ConnectionTracing.java b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/ConnectionTracing.java
index 10c337262..33fbdb033 100755
--- a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/ConnectionTracing.java
+++ b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/ConnectionTracing.java
@@ -17,7 +17,7 @@ public class ConnectionTracing {
                                 String connectInfo, String method, String sql, Executable<R> exec)
             throws SQLException {
         try {
-            rpcClientInvokeMonitor.traceBeforeInvoke(Identification
+            rpcClientInvokeMonitor.beforeInvoke(Identification
                     .newBuilder()
                     .viewPoint(connectInfo)
                     .businessKey(
diff --git a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/PreparedStatementTracing.java b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/PreparedStatementTracing.java
index c16e3c1b1..a4b35d211 100644
--- a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/PreparedStatementTracing.java
+++ b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/PreparedStatementTracing.java
@@ -18,7 +18,7 @@ public class PreparedStatementTracing {
 			String connectInfo, String method, String sql, Executable<R> exec)
 			throws SQLException {
 		try {
-			rpcClientInvokeMonitor.traceBeforeInvoke(Identification
+			rpcClientInvokeMonitor.beforeInvoke(Identification
 					.newBuilder()
 					.viewPoint(connectInfo)
 					.businessKey(
diff --git a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/StatementTracing.java b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/StatementTracing.java
index 81b3f6529..4009e63b2 100644
--- a/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/StatementTracing.java
+++ b/skywalking-collector/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/ai/cloud/skywalking/plugin/jdbc/StatementTracing.java
@@ -17,7 +17,7 @@ public class StatementTracing {
                                 String connectInfo, String method, String sql, Executable<R> exec)
             throws SQLException {
         try {
-            rpcClientInvokeMonitor.traceBeforeInvoke(Identification
+            rpcClientInvokeMonitor.beforeInvoke(Identification
                     .newBuilder()
                     .viewPoint(connectInfo)
                     .businessKey(
diff --git a/skywalking-collector/skywalking-sdk-plugin/jedis-2.x-plugin/src/main/java/com/ai/cloud/skywalking/jedis/v2/plugin/JedisBaseInterceptor.java b/skywalking-collector/skywalking-sdk-plugin/jedis-2.x-plugin/src/main/java/com/ai/cloud/skywalking/jedis/v2/plugin/JedisBaseInterceptor.java
index d44a58767..2686f576d 100644
--- a/skywalking-collector/skywalking-sdk-plugin/jedis-2.x-plugin/src/main/java/com/ai/cloud/skywalking/jedis/v2/plugin/JedisBaseInterceptor.java
+++ b/skywalking-collector/skywalking-sdk-plugin/jedis-2.x-plugin/src/main/java/com/ai/cloud/skywalking/jedis/v2/plugin/JedisBaseInterceptor.java
@@ -30,7 +30,7 @@ public abstract class JedisBaseInterceptor extends SimpleObjectFirstInvokeInterc
                 builder.businessKey("key="
                         + interceptorContext.allArguments()[0]);
             }
-            rpcClientInvokeMonitor.traceBeforeInvoke(builder.build());
+            rpcClientInvokeMonitor.beforeInvoke(builder.build());
         }
     }
 
diff --git a/skywalking-collector/skywalking-sdk-plugin/web-plugin/src/main/java/com/ai/cloud/skywalking/plugin/web/SkyWalkingFilter.java b/skywalking-collector/skywalking-sdk-plugin/web-plugin/src/main/java/com/ai/cloud/skywalking/plugin/web/SkyWalkingFilter.java
index 62cae8eb7..2944f2d56 100644
--- a/skywalking-collector/skywalking-sdk-plugin/web-plugin/src/main/java/com/ai/cloud/skywalking/plugin/web/SkyWalkingFilter.java
+++ b/skywalking-collector/skywalking-sdk-plugin/web-plugin/src/main/java/com/ai/cloud/skywalking/plugin/web/SkyWalkingFilter.java
@@ -52,7 +52,7 @@ public class SkyWalkingFilter implements Filter {
                 }
             }
             rpcServerInvokeMonitor = new RPCServerInvokeMonitor();
-            rpcServerInvokeMonitor.traceBeforeInvoke(contextData, generateIdentification(request));
+            rpcServerInvokeMonitor.beforeInvoke(contextData, generateIdentification(request));
             filterChain.doFilter(servletRequest, servletResponse);
 
             HttpServletResponse httpServletResponse = (HttpServletResponse) servletResponse;