diff --git a/zh-cn/readme.md b/zh-cn/readme.md
index 6fa9316b43e135630e97316d312b2e87a1404616..2f28456dc8dcf343af489552b5aa83affa7e61ad 100644
--- a/zh-cn/readme.md
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@@ -47,8 +47,8 @@
 
         -   porting：移植适配
 
-            [三方库移植指导](device-dev/porting/transplant-thirdparty.md)
-			[标准系统芯片移植指导](device-dev/porting/standard_system_porting_guide.md)
+            -	[三方库移植指导](device-dev/porting/transplant-thirdparty.md)
+			-	[标准系统芯片移植指导](device-dev/porting/standard_system_porting_guide.md)
 
         -   bundles：组件开发
             -   [组件开发规范](device-dev/bundles/bundles-standard-rules.md)