diff --git a/README.md b/README.md
index 4ae320f..6142a5d 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@ python-aliyun
 
 Python API wrapper for the Aliyun cloud
 
+[http://python-aliyun.readthedocs.org](http://python-aliyun.readthedocs.org/en/latest/)
+
 Installing
 ----------