diff --git a/skywalking-network/src/main/java/com/a/eye/skywalking/network/Client.java b/skywalking-network/src/main/java/com/a/eye/skywalking/network/Client.java
deleted file mode 100644
index dc535aec6..000000000
--- a/skywalking-network/src/main/java/com/a/eye/skywalking/network/Client.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package com.a.eye.skywalking.network;
-
-import io.grpc.Channel;
-import io.grpc.ManagedChannelBuilder;
-import io.grpc.internal.DnsNameResolverProvider;
-
-public class Client {
-
-    private static Client  client;
-    private        Channel channel;
-
-    private static final String DEFAULT_ADDRESS = "localhost";
-    private static final int    DEFAULT_PORT    = 34000;
-
-    private String host = DEFAULT_ADDRESS;
-    private int    port = DEFAULT_PORT;
-
-    public static Client forAddress(String host, int port) {
-        if (client == null) {
-            client = new Client(host, port);
-        }
-
-        return client;
-    }
-
-    public static Client INSTANCE() {
-        return client;
-    }
-
-    private Client(String host, int port) {
-        this.host = host;
-        this.port = port;
-    }
-
-
-    public void start() {
-        ManagedChannelBuilder<?> channelBuilder =
-                ManagedChannelBuilder.forAddress(host, port).nameResolverFactory(new DnsNameResolverProvider())
-                        .usePlaintext(true);
-        channel = channelBuilder.build();
-    }
-}
diff --git a/skywalking-network/src/main/proto/SpanSender.proto b/skywalking-network/src/main/proto/SpanSender.proto
deleted file mode 100644
index fd941292f..000000000
--- a/skywalking-network/src/main/proto/SpanSender.proto
+++ /dev/null
@@ -1,33 +0,0 @@
-syntax = "proto3";
-
-option java_multiple_files = true;
-option java_package = "com.a.eye.skywalking.network.grpc";
-
-import "Spans.proto";
-
-service AckSpanSender {
-    rpc send (stream AckSpan) returns (SendResult) {
-    };
-}
-
-service RequestSpanSender {
-    rpc send (stream RequestSpan) returns (SendResult) {
-    };
-}
-
-
-service InputParametersSpanSender {
-    rpc send (stream InputParametersSpan) returns (SendResult) {
-    };
-}
-
-
-service OutputParametersSpanSender {
-    rpc send (stream OutputParametersSpan) returns (SendResult) {
-    };
-}
-
-message SendResult {
-    // 0 成功  1 失败
-    int32 result = 1;
-}
diff --git a/skywalking-network/src/main/proto/SpanStorageService.proto b/skywalking-network/src/main/proto/SpanStorageService.proto
new file mode 100644
index 000000000..406595112
--- /dev/null
+++ b/skywalking-network/src/main/proto/SpanStorageService.proto
@@ -0,0 +1,18 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "com.a.eye.skywalking.network.grpc";
+
+import "Spans.proto";
+
+service SpanStorageService {
+    rpc storageACKSpan(stream AckSpan) returns (SendResult) {
+    };
+    rpc storageRequestSpan(stream RequestSpan) returns (SendResult) {
+    };
+}
+
+message SendResult {
+    // 0 成功  1 失败
+    int32 result = 1;
+}
diff --git a/skywalking-network/src/main/proto/Spans.proto b/skywalking-network/src/main/proto/Spans.proto
index 72f7227e9..d18009b07 100644
--- a/skywalking-network/src/main/proto/Spans.proto
+++ b/skywalking-network/src/main/proto/Spans.proto
@@ -25,19 +25,24 @@ message RequestSpan {
     string applicationId = 9;
     string userId = 10;
     string bussinessKey = 11;
-    string agentId = 12;
     string processNo = 13;
     string address = 14;
 }
 
-message InputParametersSpan {
+message Span{
     string traceId = 1;
-    string traceLevelId = 2;
-    map<string, string> parameters = 3;
-}
-
-message OutputParametersSpan {
-    string traceId = 1;
-    string traceLevelId = 2;
-    string outputParameter = 3;
+    string levelId = 2; // parentLevelId + "." + levelId
+    string viewpoint = 3;
+    int64 starttime = 4;
+    int64 cost = 5;
+    int32 statusCode = 6;
+    string exceptionStack = 7;
+    string spanTypeDesc = 8;
+    string callType = 9;
+    uint32 spanType = 10;
+    string applicationId = 11;
+    string userId = 12;
+    string businessKey = 13;
+    string processNo = 14;
+    string address = 15;
 }
diff --git a/skywalking-network/src/main/proto/TraceSearchService.proto b/skywalking-network/src/main/proto/TraceSearchService.proto
new file mode 100644
index 000000000..34b147c26
--- /dev/null
+++ b/skywalking-network/src/main/proto/TraceSearchService.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "com.a.eye.skywalking.network.grpc";
+
+import "Spans.proto";
+
+service TraceSearchService{
+    rpc search(string) returns (SearchResult){};
+}
+
+
+message SearchResult{
+    repeated Span spans= 1;
+}