diff --git a/background.js b/background.js
index 7c4081f..627a473 100644
--- a/background.js
+++ b/background.js
@@ -39,10 +39,10 @@ chrome.contextMenus.create({
 function init_edit_function(){
   chrome.storage.local.get(["config-request_hook"], function (res) {
     try{
-      var code = res["config-request_hook"]
-      // TODO
+      window.eval(res["config-request_hook"])
     }catch(e){
-      console.log(e)
+      change_request = undefined;
+      console.log('evaluate code init change_request func err.', e)
     }
   })
 }
@@ -132,16 +132,45 @@ chrome.debugger.onEvent.addListener(function (source, method, params){
       }else{
         var options = { requestId: params.requestId }
         if (edit_request){
-          var url = params.request.url
-          var method = params.request.method
-          var postData = params.request.postData
-          var headers = params.request.headers
-          // console.log(method, url, headers, postData)
+          var { url, method, postData, headers } = params.request
+          var config = { url, method, postData, headers }
+
+          if (typeof change_request != 'undefined'){
+            try{
+              change_request(config)
+            }catch(e){
+              console.log('run change_request err.', e)
+            }
+          }
+
+          var { url, method, postData, headers } = config
+
+          function base64(str){
+            return CryptoJS.enc.Utf8.parse(str).toString(CryptoJS.enc.Base64)
+          }
           // 这里处理更新操作
-          // options.url = url
-          // options.method = method
-          // options.postData = postData
-          // options.headers = headers // 这里直接放进去似乎还会有问题
+          try{
+            if (url){
+              options.url = url
+            }
+            if (method){
+              options.method = method
+            }
+            if (postData){
+              options.postData = base64(postData)
+            }
+            if (headers){
+              var keys = Object.keys(headers)
+              var headers_list = []
+              for (var i = 0; i < keys.length; i++) {
+                headers_list.push({name:keys[i], value:headers[keys[i]]})
+              }
+              options.headers = headers_list
+            }
+          }catch(e){
+            console.log('set change request err.', e)
+          }
+          console.log('change request options:', options)
         }
         sendCommand("Fetch.continueRequest", options, source);
         break;
diff --git a/options.html b/options.html
index c58e765..def5f82 100644
--- a/options.html
+++ b/options.html
@@ -139,8 +139,9 @@
             <table id="response_changer"></table>
 
             <h2 style="margin-bottom: 0px;margin-top: 50px;">动态修改请求包</h2>
+            <button id="default_code_dyn_change_request">默认代码模板</button>
             <hr>
-            <textarea id='fetch_hook' data-key="config-request_hook" style="width: 100%; height: 500px"></textarea>
+            <textarea id='request_hook' data-key="config-request_hook" style="width: 100%; height: 500px"></textarea>
 
             <h2 style="margin-bottom: 0px;margin-top: 50px;">动态修改被调试页面的所有js代码</h2>
             <hr>
diff --git a/options.js b/options.js
index 8431564..b1393c9 100644
--- a/options.js
+++ b/options.js
@@ -487,10 +487,49 @@ var fetch_hook = document.getElementById('fetch_hook');
 chrome.storage.local.get([fetch_hook.dataset.key], function (result) {
   fetch_hook.value = result[fetch_hook.dataset.key] || '';
 })
-fetch_hook.addEventListener("change", function(v){
+function change_fetch_hook(v){    console.log('change_fetch_hook')
   chrome.storage.local.set({
     [v.target.dataset.key]: v.target.value
   })
+}
+fetch_hook.addEventListener("input", change_fetch_hook)
+fetch_hook.addEventListener("change", change_fetch_hook)
+fetch_hook.addEventListener("blur", change_fetch_hook)
+var request_hook = document.getElementById('request_hook')
+chrome.storage.local.get([request_hook.dataset.key], function (result) {
+  request_hook.value = result[request_hook.dataset.key] || '';
+})
+function change_request_hook(v){    console.log('change_request_hook')
+  chrome.storage.local.set({
+    [v.target.dataset.key]: v.target.value
+  })
+}
+request_hook.addEventListener("input", change_request_hook)
+request_hook.addEventListener("change", change_request_hook)
+request_hook.addEventListener("blur", change_request_hook)
+var default_code_dyn_change_request = document.getElementById('default_code_dyn_change_request')
+default_code_dyn_change_request.addEventListener('click', function(e){
+    request_hook.value = 
+`/* 
+ * 在固定的函数名字里面编写你需要对特定参数修改的处理方式
+ * 请勿修改下面函数的名字，需要的处理在函数内部处理即可
+ * change_request 这个函数用于修改 Request 请求中的数据
+ *     将修改后的值赋值给 config 就可以修改内容
+ */
+
+function change_request(config){
+    var { url, method, postData, headers } = config
+    var new_url = url
+    var new_method = method
+    var new_postData = postData
+    var new_headers = headers
+
+    // do something in here.
+    console.log('new_postData', new_postData)
+
+    config.postData = new_postData
+}`
+    request_hook.focus()
 })
 
 var myinject = document.getElementById('myinject');