diff --git a/README.md b/README.md
index 3a5b003..9bfb847 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ A Flutter im plugin.
 
 ##### [Android 体验包(密码：123456)](https://www.pgyer.com/openim)
 ##### [Flutter demo源码地址](https://github.com/hrxiang/OpenIMFlutterDemo.git)
-##### [SDK文档地址](http://open-im.io:4999)
+##### [SDK文档地址](xxxx)
 
 ## Getting Started