diff --git a/docs/note/index.md b/docs/note/index.md
index bf1937e..ff91f84 100644
--- a/docs/note/index.md
+++ b/docs/note/index.md
@@ -1,8 +1,8 @@
 # 读书笔记
 开卷有益  
 
-* [数学相关](./math/README.md)
-* [密码学](./cryptography/README.md)
-* [图形学](./graphics/README.md)
+* [数学相关](./math/)
+* [密码学](./cryptography/)
+* [图形学](./graphics/)
 * 编程语言
-	* [JavaScript](./language/javascript/README.md)
+	* [JavaScript](./language/javascript/)