diff --git a/配置与初始化.md b/配置与初始化.md
index f581916..25735a5 100644
--- a/配置与初始化.md
+++ b/配置与初始化.md
@@ -12,7 +12,7 @@ Overtrue\Wechat\Alias::register();
 
     - 完整类名：`Overtrue\Wechat\Server`
     - 别名：`WechatServer`
-    - 参数：`__construct($appId, $token, $encodingAESKey)`
+    - 参数：`__construct($appId, $token = null, $encodingAESKey = null)`
 
 ### 消息