diff --git a/README.md b/README.md
index 5a127029..0e65a91c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,12 @@
+Table of contents
+=================
+
+* [算法面试思维导图](#算法面试思维导图)
+* [算法文章精选](#算法文章精选)
+
 # 算法面试思维导图:
 
-![算法面试知识大纲](https://img-blog.csdnimg.cn/20200810145343521.png)
+![算法面试知识大纲](https://img-blog.csdnimg.cn/20200811091858722.png)
 
 # 算法文章精选：