diff --git a/docs/userland/index.rst b/docs/userland/index.rst
index b0a15b9d..e828ae28 100644
--- a/docs/userland/index.rst
+++ b/docs/userland/index.rst
@@ -1,9 +1,13 @@
 应用层
 ====================================
+.. toctree::
+   :maxdepth: 1
+   
+   intro
 
 .. toctree::
    :maxdepth: 2
    :caption: LibC
 
-   intro
+   
    libc/index
\ No newline at end of file