diff --git a/core/customservice.lib.php b/core/customservice.lib.php
index eeed30c..eccd95b 100644
--- a/core/customservice.lib.php
+++ b/core/customservice.lib.php
@@ -9,7 +9,7 @@ namespace LaneWeChat\Core;
  * Date: 14-10-31
  * Time: 上午10:30
  * E-mail: lixuan868686@163.com
- * WebSite: http://www.lanecn.com
+ * WebSite: http://www.lanecn.com 
  */
 class CustomService
 {
@@ -25,13 +25,17 @@ class CustomService
      */
     public function addAccount($kfAccount, $nickname, $password)
     {
+        // 构建请求URL，包含access_token
         $queryUrl = 'https://api.weixin.qq.com/customservice/kfaccount/add?access_token=' . AccessToken::getAccessToken();
         $queryAction = 'POST';
+        // 创建模板数组
         $template = array();
         $template['kf_account'] = $kfAccount;
         $template['nickname'] = $nickname;
         $template['password'] = $password;
+        // 将模板数组转换为JSON格式
         $template = json_encode($template);
+        // 使用Curl类发送POST请求
         return Curl::callWebServer($queryUrl, $template, $queryAction);
     }
 
@@ -46,13 +50,17 @@ class CustomService
      */
     public function editAccount($kfAccount, $nickname, $password)
     {
+        // 构建请求URL，包含access_token
         $queryUrl = 'https://api.weixin.qq.com/customservice/kfaccount/update?access_token=' . AccessToken::getAccessToken();
         $queryAction = 'POST';
+        // 创建模板数组
         $template = array();
         $template['kf_account'] = $kfAccount;
         $template['nickname'] = $nickname;
         $template['password'] = $password;
+        // 将模板数组转换为JSON格式
         $template = json_encode($template);
+        // 使用Curl类发送POST请求
         return Curl::callWebServer($queryUrl, $template, $queryAction);
     }
 
@@ -65,11 +73,15 @@ class CustomService
      */
     public function delAccount($kfAccount)
     {
+        // 构建请求URL，包含access_token
         $queryUrl = 'https://api.weixin.qq.com/customservice/kfaccount/del?access_token=' . AccessToken::getAccessToken();
         $queryAction = 'POST';
+        // 创建模板数组
         $template = array();
         $template['kf_account'] = $kfAccount;
+        // 将模板数组转换为JSON格式
         $template = json_encode($template);
+        // 使用Curl类发送POST请求
         return Curl::callWebServer($queryUrl, $template, $queryAction);
     }
 
@@ -81,8 +93,10 @@ class CustomService
      */
     public function getAccountList()
     {
+        // 构建请求URL，包含access_token
         $queryUrl = 'https://api.weixin.qq.com/cgi-bin/customservice/getkflist?access_token=' . AccessToken::getAccessToken();
         $queryAction = 'GET';
+        // 使用Curl类发送GET请求
         return Curl::callWebServer($queryUrl, '', $queryAction);
     }
 
@@ -97,12 +111,16 @@ class CustomService
      */
     public function setAccountImage($kfAccount, $imagePath)
     {
+        // 检查头像文件是否存在
         if (!file_exists($imagePath)) {
             return false;
         }
+        // 构建请求URL，包含access_token和kf_account
         $queryUrl = 'http://api.weixin.qq.com/customservice/kfaccount/uploadheadimg?access_token=' . AccessToken::getAccessToken() . '&kf_account=' . $kfAccount;
+        // 创建数据数组
         $data = array();
         $data['media'] = '@' . $imagePath;
+        // 使用Curl类发送POST请求，设置multipart为1表示发送文件
         return Curl::callWebServer($queryUrl, $data, 'POST', 1, 0);
     }
 
@@ -120,16 +138,21 @@ class CustomService
      */
     public function getRecord($startTime, $endTime, $pageIndex = 1, $pageSize = 1000, $openId = '')
     {
+        // 构建请求URL，包含access_token
         $queryUrl = 'https://api.weixin.qq.com/cgi-bin/customservice/getrecord?access_token=' . AccessToken::getAccessToken();
         $queryAction = 'POST';
+        // 创建模板数组
         $template = array();
         $template['starttime'] = $startTime;
         $template['endtime'] = $endTime;
         $template['openid'] = $openId;
         $template['pagesize'] = $pageSize;
         $template['pageindex'] = $pageIndex;
+        // 将模板数组转换为JSON格式
         $template = json_encode($template);
+        // 使用Curl类发送POST请求
         $result = Curl::callWebServer($queryUrl, $template, $queryAction);
+        // 返回聊天记录列表
         return isset($result['recordlist']) ? $result['recordlist'] : array();
     }
 }