diff --git a/app/steps/sendProxyRequest.js b/app/steps/sendProxyRequest.js
index 9fbd5159..ce94f76d 100644
--- a/app/steps/sendProxyRequest.js
+++ b/app/steps/sendProxyRequest.js
@@ -1,5 +1,5 @@
 'use strict';
-
+var qs = require('qs');
 var chunkLength = require('../../lib/chunkLength');
 
 function sendProxyRequest(Container) {
@@ -49,7 +49,7 @@ function sendProxyRequest(Container) {
         if (contentType && contentType.match('x-www-form-urlencoded')) {
           try {
             var params = JSON.parse(body);
-            body = Object.keys(params).map(function (k) { return k + '=' + params[k]; }).join('&');
+            body = qs.stringify(params);
           } catch (e) {
             // bodyContent is not json-format
           }
diff --git a/package-lock.json b/package-lock.json
index e472897e..80917ea9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
       "dependencies": {
         "debug": "^3.0.1",
         "es6-promise": "^4.1.1",
+        "qs": "^6.11.0",
         "raw-body": "^2.3.0"
       },
       "devDependencies": {
@@ -448,7 +449,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/call-bind/-/call-bind-1.0.2.tgz",
       "integrity": "sha512-7O+FbCihrB5WGbFYesctwmTKae6rOiIzmz1icreWJ+0aA7LJfuqhEso2T9ncpcFtzMQtzXf2QGGueWJGTYsqrA==",
-      "dev": true,
       "dependencies": {
         "function-bind": "^1.1.1",
         "get-intrinsic": "^1.0.2"
@@ -1366,8 +1366,7 @@
     "node_modules/function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
-      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
-      "dev": true
+      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A=="
     },
     "node_modules/get-caller-file": {
       "version": "2.0.5",
@@ -1391,7 +1390,6 @@
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.2.1.tgz",
       "integrity": "sha512-2DcsyfABl+gVHEfCOaTrWgyt+tb6MSEGmKq+kI5HwLbIYgjgmMcV8KQ41uaKz1xxUcn9tJtgFbQUEVcEbd0FYw==",
-      "dev": true,
       "dependencies": {
         "function-bind": "^1.1.1",
         "has": "^1.0.3",
@@ -1459,7 +1457,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
       "integrity": "sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==",
-      "dev": true,
       "dependencies": {
         "function-bind": "^1.1.1"
       },
@@ -1480,7 +1477,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/has-proto/-/has-proto-1.0.1.tgz",
       "integrity": "sha512-7qE+iP+O+bgF9clE5+UoBFzE65mlBiVj3tKCrlNQ0Ogwm0BjpT/gK4SlLYDMybDh5I3TCTKnPPa0oMG7JDYrhg==",
-      "dev": true,
       "engines": {
         "node": ">= 0.4"
       },
@@ -1492,7 +1488,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.3.tgz",
       "integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A==",
-      "dev": true,
       "engines": {
         "node": ">= 0.4"
       },
@@ -2041,7 +2036,6 @@
       "version": "1.12.3",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.12.3.tgz",
       "integrity": "sha512-geUvdk7c+eizMNUDkRpW1wJwgfOiOeHbxBR/hLXK1aT6zmVSO0jsQcs7fj6MGw89jC/cjGfLcNOrtMYtGqm81g==",
-      "dev": true,
       "funding": {
         "url": "https://github.com/sponsors/ljharb"
       }
@@ -2231,9 +2225,9 @@
     },
     "node_modules/qs": {
       "version": "6.11.0",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.11.0.tgz",
+      "resolved": "https://registry-npm.myscrm.cn/repository/pkg/qs/-/qs-6.11.0.tgz",
       "integrity": "sha512-MvjoMCJwEarSbUYk5O+nmoSzSutSsTwF85zcHPQ9OrlFoZOYIjaqBAJIqIXjptyD5vThxGq52Xu/MaJzRkIk4Q==",
-      "dev": true,
+      "license": "BSD-3-Clause",
       "dependencies": {
         "side-channel": "^1.0.4"
       },
@@ -2526,7 +2520,6 @@
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.4.tgz",
       "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
-      "dev": true,
       "dependencies": {
         "call-bind": "^1.0.0",
         "get-intrinsic": "^1.0.2",
diff --git a/package.json b/package.json
index 1bbd9fe2..1cca182d 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
   "dependencies": {
     "debug": "^3.0.1",
     "es6-promise": "^4.1.1",
+    "qs": "^6.11.0",
     "raw-body": "^2.3.0"
   },
   "contributors": [