diff --git a/doc/fluid/api_guides/index_cn.rst b/doc/fluid/api_guides/index_cn.rst
index 7aad8ab593a376654ab82a875a476c74620f3a3f..9873d55c2e71225e1334477556c1c74380955da3 100644
--- a/doc/fluid/api_guides/index_cn.rst
+++ b/doc/fluid/api_guides/index_cn.rst
@@ -1,4 +1,4 @@
-API Guides
+API Guide
 =========
 
 ..  toctree::
@@ -6,4 +6,4 @@ API Guides
 
   :maxdepth: 1
   
-  high_low_level_api.md
\ No newline at end of file
+  high_low_level_api.md