diff --git a/README.md b/README.md
index b6c4781a92606900538e7b3ab49283d4c302f94f..5306f32c9aa3a77ae63c5bdec2f05cdb2cd71305 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@
 
 # 知识库地图
 
-![](https://itwanger-oss.oss-cn-beijing.aliyuncs.com/tobebetterjavaer/images/tobebetterjavaer-map.png)
+![](http://cdn.tobebetterjavaer.com/tobebetterjavaer/images/tobebetterjavaer-map.png)
 
 # Java基础