diff --git a/docs/deploy/das.md b/docs/deploy/das.md
index a55d35fa..74f0068a 100644
--- a/docs/deploy/das.md
+++ b/docs/deploy/das.md
@@ -295,7 +295,7 @@ firewall-cmd --reload
 yum install nginx -y
 ```
 
-配置文件
+### 配置文件
 
 创建或编辑配置文件 `/etc/nginx/conf.d/nginx.conf`,内容如下：