diff --git a/src/main/java/org/bdware/server/GRPCPool.java b/src/main/java/org/bdware/server/GRPCPool.java
index 007b9c1..47f43b1 100644
--- a/src/main/java/org/bdware/server/GRPCPool.java
+++ b/src/main/java/org/bdware/server/GRPCPool.java
@@ -352,10 +352,9 @@ public class GRPCPool implements ChainOpener {
 
                 }
                 //根据事务类型查找
-                else if(args.has("type")){
+                else if (args.has("type")) {
                     index = createIndexIfNotExist(args.get("type").getAsString());
-                }
-                else index = logIndex;
+                } else index = logIndex;
                 List<byte[]> result;
                 if (offset < 0) result = index.requestLast(count);
                 else result = index.request(offset, count);
@@ -389,9 +388,9 @@ public class GRPCPool implements ChainOpener {
             try {
                 JsonObject jo =
                         JsonParser.parseString(
-                                        new String(
-                                                hash2Data.get(
-                                                        args.get("hash").getAsString().getBytes())))
+                                new String(
+                                        hash2Data.get(
+                                                args.get("hash").getAsString().getBytes())))
                                 .getAsJsonObject();
                 jo.addProperty("action", "onQueryDataByHash");
                 resultCallback.onResult(JsonUtil.toJson(jo));
@@ -427,9 +426,9 @@ public class GRPCPool implements ChainOpener {
             try {
                 JsonObject jo =
                         JsonParser.parseString(
-                                        new String(
-                                                hash2Data.get(
-                                                        args.get("hash").getAsString().getBytes())))
+                                new String(
+                                        hash2Data.get(
+                                                args.get("hash").getAsString().getBytes())))
                                 .getAsJsonObject();
                 jo.addProperty("action", "onQueryDataByHash");
                 resultCallback.onResult(JsonUtil.toJson(jo));
@@ -759,7 +758,7 @@ public class GRPCPool implements ChainOpener {
             String s;
             for (String info : detailStr) {
                 if (info.equals("Arg")) {
-                    s = c.getArg();
+                    s = c.getArg().getAsString();
                     s = JsonUtil.toJson(s);
                     if (s.length() > 2) {
                         s = s.substring(1, s.length() - 1);
diff --git a/src/main/java/org/bdware/server/action/CMActions.java b/src/main/java/org/bdware/server/action/CMActions.java
index b4fb46e..ab45649 100644
--- a/src/main/java/org/bdware/server/action/CMActions.java
+++ b/src/main/java/org/bdware/server/action/CMActions.java
@@ -156,7 +156,7 @@ public class CMActions implements OnHashCallback {
         }
         if (args.has("operation")) {
             cReq.setAction(args.get("operation").getAsString());
-            cReq.setArg(args.get("arg").getAsString());
+            cReq.setArg(args.get("arg"));
         } else {
             JsonObject jo = JsonParser.parseString(args.get("arg").getAsString()).getAsJsonObject();
             if (!jo.has("action") || !jo.has("arg")) {
@@ -283,16 +283,15 @@ public class CMActions implements OnHashCallback {
 
             if (FUNCINVOKEINFO.getOneFunction(c.getContractID(), desp.functionName) != null) {
 
-                ArrayList<javax.json.JsonObject> Records =
+                ArrayList<JsonObject> Records =
                         FUNCINVOKEINFO.getOneFunction(c.getContractID(), desp.functionName);
                 invokeRocords = Records.toString();
                 // System.out.println(Records.get(0));
 
                 if (Records.get(0) != null) {
 
-                    argTemplate = Records.get(0).get("args").toString();
-                    //resTemplate = Records.get(0).get("res").toString();
-                    argSchema = Records.get(0).get("args").toString();
+                    argTemplate = Records.get(0).get("args").getAsString();
+                    argSchema = Records.get(0).get("args").getAsString();
                     resSchema = Records.get(0).get("res").toString();
                     JsonElement argEle = JsonParser.parseString(argSchema);
                     MockSchemaParser parser = new MockSchemaParser();
diff --git a/src/main/java/org/bdware/server/executor/unconsistency/MultiPointCooperationExecutor.java b/src/main/java/org/bdware/server/executor/unconsistency/MultiPointCooperationExecutor.java
index dd8ac64..c7ac257 100644
--- a/src/main/java/org/bdware/server/executor/unconsistency/MultiPointCooperationExecutor.java
+++ b/src/main/java/org/bdware/server/executor/unconsistency/MultiPointCooperationExecutor.java
@@ -154,7 +154,7 @@ public class MultiPointCooperationExecutor implements ContractExecutor {
                     }
                     return new String[]{members[val]};
                 case byTarget:
-                    JsonObject jo = JsonParser.parseString(req.getArg()).getAsJsonObject();
+                    JsonObject jo = req.getArg().getAsJsonObject();
                     val =
                             new BigInteger(jo.get("target").getAsString(), 16)
                                     .mod(new BigInteger("" + members.length))
diff --git a/src/main/java/org/bdware/utils/FuncInvokeInfo.java b/src/main/java/org/bdware/utils/FuncInvokeInfo.java
index b20cf85..d06f98d 100644
--- a/src/main/java/org/bdware/utils/FuncInvokeInfo.java
+++ b/src/main/java/org/bdware/utils/FuncInvokeInfo.java
@@ -1,9 +1,10 @@
 package org.bdware.utils;
 
-import javax.json.*;
 
 import java.util.*;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import org.bdware.sc.db.FIFOCache;
 
 public class FuncInvokeInfo {
@@ -51,13 +52,12 @@ public class FuncInvokeInfo {
     }
 
     public void putOneInvoke(
-            String ContractName, String FunctionName, String ResponseID, String args, String res) {
+            String ContractName, String FunctionName, String ResponseID, JsonElement args, String res) {
         String Key1 = ContractName + "|" + FunctionName;
         String Key2 = ResponseID;
-        JsonObject Record = null; // 一条调用信息{arg:xx,res:xx}
-        JsonBuilderFactory factory = null;
-        factory = Json.createBuilderFactory(null);
-        Record = factory.createObjectBuilder().add("args", args).add("res", res).build();
+        JsonObject Record =new JsonObject();
+        Record.add("args",args);
+        Record.addProperty("res",res);
 
         invokeInfoList.add(Key1, Record);