diff --git a/doc/fluid/user_guides/index.rst b/doc/fluid/user_guides/index.rst
index 377631109d8f6..8dc5fa2389efe 100644
--- a/doc/fluid/user_guides/index.rst
+++ b/doc/fluid/user_guides/index.rst
@@ -16,4 +16,4 @@
     howto/debug/index
     howto/evaluation/index
     howto/inference/index
-    models/index.rst
+    models/index.md
diff --git a/doc/fluid/user_guides/models/index.rst b/doc/fluid/user_guides/models/index.md
similarity index 100%
rename from doc/fluid/user_guides/models/index.rst
rename to doc/fluid/user_guides/models/index.md