diff --git a/CustomView/Advance/[9]Matrix_Basic.md b/CustomView/Advance/[9]Matrix_Basic.md
index 04cf94d..32ef114 100644
--- a/CustomView/Advance/[9]Matrix_Basic.md
+++ b/CustomView/Advance/[9]Matrix_Basic.md
@@ -14,8 +14,6 @@
 ## Matrix简介
 
 <p id="gaishu" />
-### 概述
-
 **Matrix是一个矩阵，主要功能是坐标映射，数值转换。**
 
 它看起来大概是下面这样: