diff --git a/README.md b/README.md
index ce1613e..c9775f1 100644
--- a/README.md
+++ b/README.md
@@ -4,11 +4,7 @@
 
 **简介**：`Java` 面试题随笔记
 
-_参考源：1. [小林 Coding](https://xiaolincoding.com/) 2. [Java Guide](https://javaguide.cn/)_
-
-**目录**
-
-_TODO_
+_参考源：1. [小林 Coding](https://xiaolincoding.com/) 2. [Java Guide](https://javaguide.cn/)_ 
 
 ---
 
@@ -19,3 +15,22 @@ _TODO_
 > ——《Clannad》
 
 ![Clannad](https://raw.githubusercontent.com/2311719626/NoteBook/main/img/image.png)
+
+---
+
+## 目录
+
+- [MySQL](#mysql)
+  - [1. 执行 SQL 语句的过程](./MySQL/1.%20执行%20SQL%20语句的过程.md)
+  - [2. 记录的存储过程](./MySQL/2.%20记录的存储过程.md)
+  - [3. 索引算法](./MySQL/3.%20索引算法.md)
+  - [4. 联合索引](./MySQL/4.%20联合索引.md)
+  - [5. 索引失效](./MySQL/5.%20索引失效.md)
+  - [6. 事务特性](./MySQL/6.%20事务特性.md)
+  - [7. 隔离级别](./MySQL/7.%20隔离级别.md)
+  - [8. 锁](./MySQL/8.%20锁.md)
+  - [9. 日志](./MySQL/9.%20日志.md)
+  - [10. 检索](./MySQL/10.%20检索.md)
+  - [11. 表连接](./MySQL/11.%20表连接.md)
+  - [12. 字段类型](./MySQL/12.%20字段类型.md)
+