diff --git a/NodePortal.html b/NodePortal.html
index d806041..df3a3fb 100644
--- a/NodePortal.html
+++ b/NodePortal.html
@@ -503,7 +503,8 @@
                                                         <span class="input-group-text">参数</span>
                                                     </div>
 
-                                                    <input type="text" class="form-control" id="arg">
+                                                    <input type="text" class="form-control" placeholder="输入参数" id="arg">
+                                                    <input type="text" class="form-control col-2" placeholder="输入gas" id="gasLimit">
                                                     <div class="input-group-append">
                                                         <div class="input-group-text">
                                                             <input type="checkbox" id="executeContractAsDebug"
diff --git a/js/NodeContractInstances.js b/js/NodeContractInstances.js
index 36d1ac3..0dcd231 100644
--- a/js/NodeContractInstances.js
+++ b/js/NodeContractInstances.js
@@ -398,8 +398,16 @@ function executeContract() {
     request.pubkey = global.sm2Key.publicKey;
     request.isDebug = executeContractAsDebug.checked;
     console.log(request.arg);
+    const gasLimit = $('#gasLimit').val()/1;
+    var toSign = request.contractID + "|"
+                        + request.operation + "|" + arg ;
+    if (gasLimit>0){
+      request.gasLimit = gasLimit;
+      toSign+= "|" + gasLimit;
+    }
+    toSign+= "|" + global.sm2Key.publicKey;
     request.signature = sm2.doSignature(
-        `${request.contractID}|${operation}|${argDiv.value}|${global.sm2Key.publicKey}`,
+        toSign,
         global.sm2Key.privateKey,
         {hash: true, der: true});
     localStorage.setItem("persisArg", JSON.stringify(request));
@@ -423,7 +431,10 @@ function onExecuteResult(obj) {
                 $("#responseArea")[0].value = result.result;
         }
         $("#responseID").html(`请求ID:${obj['responseID']}`);
-        $("#responseTime").html(`响应时间:${obj['executeTime']}ms${styleTail}`);
+        var gasInfo="";
+        if (obj.executionGas!=undefined && obj.executionGas>0)
+          gasInfo="<br>"+obj.executionGas+"gas";
+        $("#responseTime").html(`响应时间:${obj['executeTime']}ms${gasInfo}${styleTail}`);
     } catch (e) {
         $("#responseStatus").html("执行状态：Failed");
         $("#responseArea")[0].value = obj.data;
diff --git a/js/OnlineIDE.js b/js/OnlineIDE.js
index 3701659..ea1f5b2 100644
--- a/js/OnlineIDE.js
+++ b/js/OnlineIDE.js
@@ -358,30 +358,27 @@ function initResponseAndOutputArea() {
 }
 
 function onExecuteResult(obj) {
-    const executeResultTitleEl = $("#executeResultTitle")
+    const executeResultTitleEl = $("#executeResultTitle");
     const data = obj;
-    executeResultTitleEl
-        .html(`${data.status}  (${obj['executeTime']}ms) 未知格式`);
+    var sytleTail = "未知格式";
     if (data.result instanceof Object) {
-        executeResultTitleEl
-            .html(`${data.status}  (${obj['executeTime']}ms) JSON格式`);
-        global.responseEditor.setValue(JSON.stringify(data.result));
+        sytleTail = "JSON格式";
     } else if (typeof data.result == 'string') {
-        executeResultTitleEl
-            .html(`${data.status}  (${obj['executeTime']}ms) 字符串格式`);
-        global.responseEditor.setValue(data.result);
-    } else {
-        if (typeof data.result == 'number') {
-            executeResultTitleEl
-                .html(`${data.status}  (${obj['executeTime']}ms) 数值格式`);
-        } else if (typeof data.result == 'boolean') {
-            executeResultTitleEl
-                .html(`${data.status}  (${obj['executeTime']}ms) 布尔型格式`);
-        }
-        global.responseEditor.setValue(data.result.toString());
+        styleTail = "字符串格式";
+    } else if (typeof data.result == 'boolean'){
+        styleTail = "布尔值格式";
+        data.result = data.result.toString();
+    }else if (typeof data.result == 'number'){
+        styleTail = "数值格式";
+        data.result = data.result.toString();
     }
-
-    // console.log(data);
+    var gasInfo = "";
+    if (data.executionGas!=undefined && data.executionGas>0)
+    gasInfo =" "+data.executionGas+"gas";
+    global.responseEditor.setValue(data.result);
+    executeResultTitleEl
+                .html(`${data.status}  (${obj['executeTime']}ms)${gasInfo} ${styleTail}`);
+      // console.log(data);
     const totalLines = global.responseEditor.lineCount();
 
     global.responseEditor.autoFormatRange({
diff --git a/js/onlineide/rightmenu.js b/js/onlineide/rightmenu.js
index bf354dc..22759c8 100644
--- a/js/onlineide/rightmenu.js
+++ b/js/onlineide/rightmenu.js
@@ -218,11 +218,17 @@ function executeContract() {
     request.contractID = contract.id;
     request.operation = contract.exportedFunctions[selectedFunction.value].functionName;
     const arg = executeContractArgInput.value;
-    const gasLimit = $('#gasLimit').val()
-    request.gasLimit = gasLimit ? gasLimit : '1000'
+    const gasLimit = $('#gasLimit').val()/1;
     request.pubkey = sm2Key.publicKey;
+    var toSign = request.contractID + "|"
+                    + request.operation + "|" + arg ;
+    if (gasLimit>0){
+      request.gasLimit = gasLimit;
+      toSign+= "|" + gasLimit;
+    }
+    toSign+= "|" + sm2Key.publicKey;
     request.signature = sm2.doSignature(
-        `${request.contractID}|${request.operation}|${arg}|${sm2Key.publicKey}`,
+        toSign,
         sm2Key.privateKey,
         {hash: true, der: true});
     request.arg = arg;