diff --git a/README.md b/README.md
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..e744e193bd198d3f6f6b001f0a906c580173cd38 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,57 @@
+# Fluid Documentation Skeleton
+
+## Build
+
+To build documentation, you need have a linux machine and have python2, virtualenv, gmake installed.
+
+### Preparation
+
+You need to create a `virtualenv` instead of polute the global python library path
+
+```bash
+virtualenv .env
+```
+
+You can enter virtualenv by
+
+```bash
+source .env/bin/activate
+```
+
+You can exit virtualenv by
+
+```bash
+deactivate
+```
+
+### Install dependencies
+
+```bash
+# enter virtualenv
+source .env/bin/activate
+# install dependencies
+pip install -r requirements.txt
+```
+
+### Make HTML
+
+```bash
+# make clean  # make clean to regenerate toctree. Just `make html` may have a cache.
+make html
+```
+and the html files will be generated to `build/html`. You can open `build/html/index.html` with your browser to see the documentation.
+
+## Edit
+
+### Edit documentation
+
+It is suggested to use `reStructuredText` because it is the only official markup language supportted by our documentation generating system, sphinx. `markdown` can also be used. However, since the `markdown` has so many dialects, there is no guarantee that the `markdown` source file can be rendered well.
+
+The `reStructuredText` cheatsheet is [here](http://docutils.sourceforge.net/docs/user/rst/quickref.html).
+
+
+### Edit structure
+
+The `sphinx` (our documentation generating system) uses `toctree` to organize documentation. `toctree` means `table of content tree`. 
+
+Please see the [sphinx documentation](http://www.sphinx-doc.org/en/master/), especially [`toctree` directives](http://www.sphinx-doc.org/en/master/usage/restructuredtext/directives.html)
diff --git a/source/conf.py b/source/conf.py
index b4e6426d54ccd0d4a5a1395b4e7b2b1d1116460d..8dccb0bb23ec07939eb67c68074f71c138b416e3 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -17,6 +17,7 @@ import os
 import shlex
 from recommonmark.parser import CommonMarkParser
 from recommonmark.transform import AutoStructify
+import paddle.fluid
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the