diff --git a/zh-cn/device-dev/get-code/Readme-CN.md b/zh-cn/device-dev/get-code/Readme-CN.md
index 82da2d561e3ade5ee95dbe4c1411c4114ad6ad2b..2e2aa40f2e1e91131a00b6b98bacd70cb1b57977 100755
--- a/zh-cn/device-dev/get-code/Readme-CN.md
+++ b/zh-cn/device-dev/get-code/Readme-CN.md
@@ -1,9 +1,8 @@
 # 获取源码
 
--   [获取源码](sourcecode.md)
-    -   [源码获取](sourcecode-acquire.md)
-
--   [获取工具](gettools.md)
-    -   [Docker编译环境](gettools-acquire.md)
-    -   [IDE](gettools-ide.md)
+- [源码获取](sourcecode-acquire.md)
+- 工具
+    - [工具概述](gettools-overview.md)
+    - [Docker编译环境](gettools-acquire.md)
+    - [IDE](gettools-ide.md)