diff --git a/docs/conf.py b/docs/conf.py
index b0a57bdbc..695477e35 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -24,6 +24,8 @@ author = 'HPC-AI Technology Inc.'
 # The full version, including alpha/beta/rc tags
 release = '0.0.1'
 
+if 'SPHINX_LANG' in os.environ:
+    root_doc = f'index_{os.environ["SPHINX_LANG"]}'
 # -- General configuration ---------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be
diff --git a/docs/index.rst b/docs/index.rst
index f9a6ce444..16141b5ea 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -3,27 +3,27 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-夸父AI系统（Colossal-AI）开发文档
+Colossal-AI documentation
 ======================================
 .. toctree::
    :maxdepth: 1
-   :caption: 快速上手指南
+   :caption: GETTING STARTED
 
-   installation_zh.md
-   run_demo_zh.md
+   installation.md
+   run_demo.md
 
 
 .. toctree::
    :maxdepth: 1
-   :caption: 个性化您的训练
+   :caption: CUSTOMIZE YOUR TRAINING
 
-   parallelization_zh.md
-   model_zh.md
-   trainer_engine_zh.md
-   amp_zh.md
-   zero_zh.md
-   add_your_parallel_zh.md
-   config_zh.md
+   parallelization.md
+   model.md
+   trainer_engine.md
+   amp.md
+   zero.md
+   add_your_parallel.md
+   config.md
    
 
 
diff --git a/docs/index_en.rst b/docs/index_zh.rst
similarity index 62%
rename from docs/index_en.rst
rename to docs/index_zh.rst
index 16141b5ea..f9a6ce444 100644
--- a/docs/index_en.rst
+++ b/docs/index_zh.rst
@@ -3,27 +3,27 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Colossal-AI documentation
+夸父AI系统（Colossal-AI）开发文档
 ======================================
 .. toctree::
    :maxdepth: 1
-   :caption: GETTING STARTED
+   :caption: 快速上手指南
 
-   installation.md
-   run_demo.md
+   installation_zh.md
+   run_demo_zh.md
 
 
 .. toctree::
    :maxdepth: 1
-   :caption: CUSTOMIZE YOUR TRAINING
+   :caption: 个性化您的训练
 
-   parallelization.md
-   model.md
-   trainer_engine.md
-   amp.md
-   zero.md
-   add_your_parallel.md
-   config.md
+   parallelization_zh.md
+   model_zh.md
+   trainer_engine_zh.md
+   amp_zh.md
+   zero_zh.md
+   add_your_parallel_zh.md
+   config_zh.md