diff --git a/blog/mysq-advance/engine.md b/blog/mysq-advance/engine.md
index d06e979f346ac887a6d0148ec9f1335d8af7aea3..1393de5e5eb596903f57083b87040e367b7c36a6 100644
--- a/blog/mysq-advance/engine.md
+++ b/blog/mysq-advance/engine.md
@@ -1,5 +1,5 @@
 
-# 1、存储引擎
+# 存储引擎
 
 ## 1、MySQL体系结构
 
diff --git a/blog/mysq-advance/index.md b/blog/mysq-advance/index.md
index 1f62fcd14b8cdaf26afc20c60f875c5d7a5b3d79..a11d70e2262e58d39ce2fccf17b4a80318af1af6 100644
--- a/blog/mysq-advance/index.md
+++ b/blog/mysq-advance/index.md
@@ -17,7 +17,6 @@
 
 [3. SQL优化](blog/mysq-advance/sql-optimization.md)
 
-3. SQL 优化
 4. 视图/存储过程/触发器
 5. 锁
 6. InnoDB 引擎
diff --git a/blog/mysq-advance/mysql-index.md b/blog/mysq-advance/mysql-index.md
index 6253a6dfb9cb51609ee7b2c241d168aa6da309d9..1236a184dabc579683610c23039835dc010cfc2e 100644
--- a/blog/mysq-advance/mysql-index.md
+++ b/blog/mysq-advance/mysql-index.md
@@ -1,4 +1,4 @@
-# MySQL索引学习笔记
+# MySQL索引
 
 1. 索引概述
 2. 索引结构