diff --git a/doc/fluid/api_guides/high_low_level_api.md b/doc/fluid/api/api_guides/high_low_level_api.md
similarity index 100%
rename from doc/fluid/api_guides/high_low_level_api.md
rename to doc/fluid/api/api_guides/high_low_level_api.md
diff --git a/doc/fluid/api_guides/index_cn.rst b/doc/fluid/api/api_guides/index.rst
similarity index 100%
rename from doc/fluid/api_guides/index_cn.rst
rename to doc/fluid/api/api_guides/index.rst
diff --git a/doc/fluid/api_guides/low_level/inference.rst b/doc/fluid/api/api_guides/low_level/inference.rst
similarity index 100%
rename from doc/fluid/api_guides/low_level/inference.rst
rename to doc/fluid/api/api_guides/low_level/inference.rst
diff --git a/doc/fluid/api_guides/low_level/optimizer/optimizer_all.rst b/doc/fluid/api/api_guides/low_level/optimizer/optimizer_all.rst
similarity index 100%
rename from doc/fluid/api_guides/low_level/optimizer/optimizer_all.rst
rename to doc/fluid/api/api_guides/low_level/optimizer/optimizer_all.rst
diff --git a/doc/fluid/api/index_en.rst b/doc/fluid/api/index_en.rst
index 359406819a993e7eaf2155c839373df44d97b103..c8a0ad8011d05c5af01f8637fc471c7cd68c0ae7 100644
--- a/doc/fluid/api/index_en.rst
+++ b/doc/fluid/api/index_en.rst
@@ -5,6 +5,7 @@ API Reference
 ..  toctree::
     :maxdepth: 1
 
+    api_guides/index.rst
     fluid.rst
     layers.rst
     data_feeder.rst