diff --git a/sop-sdk/sdk-nodejs/common/OpenClient.js b/sop-sdk/sdk-nodejs/common/OpenClient.js
index 3da27c36..38aae1bd 100644
--- a/sop-sdk/sdk-nodejs/common/OpenClient.js
+++ b/sop-sdk/sdk-nodejs/common/OpenClient.js
@@ -33,44 +33,75 @@ const OpenClient = Class.create({
     /**
      * 发送请求
      * @param request 请求类
-     * @param callback 回调函数，参数json
+     * @param callback 回调函数，参数json（undefined则使用executeSync）
      */
     execute: function (request, callback) {
-      this.executeToken(request, null, callback)
+      if (typeof callback == 'function') {
+        this.executeToken(request, null, callback)
+      } else {
+        return this.executeSync(request)
+      }
+    },
+    /**
+     * 发送同步请求
+     * @param request 请求类
+     * */
+    executeSync: function (request) {
+        return new Promise((resolve) => {
+            this.execute(request, res => {
+                resolve(res)
+            })
+        })
     },
     /**
      * 发送请求
      * @param request 请求类
      * @param token token
-     * @param callback 回调函数，参数json
+     * @param callback 回调函数，参数json（undefined则使用executeTokenSync）
      */
     executeToken: function (request, token, callback) {
         if (!(request instanceof BaseRequest)) {
             throw 'request类未继承BaseRequest'
         }
-        const requestType = request.getRequestType();
-        if (request.files) {
-            this._postFile(request, callback);
-        } else {
-            switch (requestType) {
-                case RequestType.GET:
-                    this._get(request, callback);
-                    break
-                case RequestType.POST_FORM:
-                    this._postForm(request, callback);
-                    break
-                case RequestType.POST_JSON:
-                    this._postJson(request, callback);
-                    break
-                case RequestType.POST_FILE:
-                    this._postFile(request, callback);
-                    break
-                default :{
-                    throw 'request.getRequestType()类型不正确'
+        if (typeof callback == 'function') {
+            const requestType = request.getRequestType();
+            if (request.files) {
+                this._postFile(request, callback);
+            } else {
+                switch (requestType) {
+                    case RequestType.GET:
+                        this._get(request, callback);
+                        break
+                    case RequestType.POST_FORM:
+                        this._postForm(request, callback);
+                        break
+                    case RequestType.POST_JSON:
+                        this._postJson(request, callback);
+                        break
+                    case RequestType.POST_FILE:
+                        this._postFile(request, callback);
+                        break
+                    default : {
+                        throw 'request.getRequestType()类型不正确'
+                    }
                 }
             }
+        } else {
+            return this.executeTokenSync(request, token)
         }
     },
+  /**
+   * 发送同步请求
+   * @param request 请求类
+   * @param token token
+   */
+    executeTokenSync: function (request, token) {
+      return new Promise((resolve) => {
+        this.executeToken(request, token, res => {
+          resolve(res)
+        })
+      })
+    },
     _get: function(request, callback) {
         const allParams = this._buildParams(request)
         const that = this
@@ -120,7 +151,13 @@ const OpenClient = Class.create({
         if (!error && response.statusCode === 200) {
             return request.parseResponse(response.body)
         } else {
-            throw '请求异常：' + error
+            // throw '请求异常：' + error
+            return { // 重新封装请求异常回调，以防中断
+                msg: '请求异常',
+                code: '502',
+                sub_msg: `${error}`,
+                sub_code: 'isv.invalid-server'
+            }
         }
     },
     _buildParams: function (request, token) {
diff --git a/sop-sdk/sdk-nodejs/common/SignUtil.js b/sop-sdk/sdk-nodejs/common/SignUtil.js
index 03d757a6..d4300aba 100644
--- a/sop-sdk/sdk-nodejs/common/SignUtil.js
+++ b/sop-sdk/sdk-nodejs/common/SignUtil.js
@@ -68,21 +68,22 @@ exports.SignUtil = {
      */
     getSignContent: function (params) {
         const paramNames = []
-        for(const key in params) {
-            paramNames.push(key)
-        }
+        // 获取对象中的Key
+        paramNames.push(...Object.keys(params || {})
+        // 过滤无效的KeyValue
+        .filter(paramName => {
+            // 参数名不为undefined且参数值不为undefined
+            return !(typeof paramName === undefined || typeof params[paramName] === undefined)
+        }))
 
         paramNames.sort()
 
-        const paramNameValue = []
-
-        for (let i = 0, len = paramNames.length; i < len; i++) {
-            const paramName = paramNames[i];
+        // 合成签名字符串
+        const paramNameValue = paramNames.map(paramName => {
             const val = params[paramName];
-            if (paramName && val) {
-                paramNameValue.push(`${paramName}=${val}`)
-            }
-        }
+            return `${paramName}=${val}`
+        })
+
         return paramNameValue.join('&')
     }
 }
diff --git a/sop-sdk/sdk-nodejs/main.js b/sop-sdk/sdk-nodejs/main.js
index f8d8987e..6d9a2370 100644
--- a/sop-sdk/sdk-nodejs/main.js
+++ b/sop-sdk/sdk-nodejs/main.js
@@ -30,6 +30,7 @@ function test() {
     // ]
 
     openClient.execute(request, data => {
+        console.log('异步请求')
         // 成功
         if (!data.sub_code) {
             console.log('成功', data);
@@ -37,6 +38,31 @@ function test() {
             console.error('失败', data)
         }
     })
+
+    // 使用Promise进行封装
+    openClient.executeSync(request).then(data => {
+        console.log('同步请求-Promise')
+        // 成功
+        if (!data.sub_code) {
+            console.log('成功', data);
+        } else {
+            console.error('失败', data)
+        }
+    })
+
+    // 使用Async/Await进行封装
+    async function syncRequest () {
+        const data = await openClient.execute(request)
+        console.log('同步请求-Async/Await')
+        // 成功
+        if (!data.sub_code) {
+            console.log('成功', data);
+        } else {
+            console.error('失败', data)
+        }
+    }
+
+    syncRequest()
 }