diff --git a/source/index.rst b/source/index.rst
index 73c3f15..0881d54 100644
--- a/source/index.rst
+++ b/source/index.rst
@@ -2,7 +2,7 @@
 ====
 
 .. toctree::
-   :maxdepth: 2
+   :maxdepth: 1
    :caption: 目录
    
    01-first-steps