diff --git a/MACA.md b/MACA.md
index ca7331f..07ac014 100644
--- a/MACA.md
+++ b/MACA.md
@@ -14,7 +14,7 @@
    yum makecache
    ```
 
-### YUM安装MACA SDK
+#### YUM安装MACA SDK
 
    -  **1.安装maca_sdk最新版本**
       ```bash
@@ -45,7 +45,7 @@
 
    ```
 
-### APT安装MACA SDK
+#### APT安装MACA SDK
 
    -  **1.安装maca_sdk最新版本**
       ```bash