diff --git a/.clang-format b/.clang-format
new file mode 100644
index 00000000000000..0f9b9ba7981378
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,15 @@
+---
+Language: Cpp
+BasedOnStyle: Google
+AccessModifierOffset: -4
+AllowShortFunctionsOnASingleLine: Inline
+ColumnLimit: 100
+ConstructorInitializerIndentWidth: 8 # double of IndentWidth
+ContinuationIndentWidth: 8 # double of IndentWidth
+DerivePointerAlignment: false # always use PointerAlignment
+IndentCaseLabels: false
+IndentWidth: 4
+PointerAlignment: Left
+ReflowComments: false
+SortUsingDeclarations: false
+SpacesBeforeTrailingComments: 1
diff --git a/docs/documentation/cn/developer-guide/format-code.md b/docs/documentation/cn/developer-guide/format-code.md
new file mode 100644
index 00000000000000..bfa3a37c40ff2d
--- /dev/null
+++ b/docs/documentation/cn/developer-guide/format-code.md
@@ -0,0 +1,66 @@
+<!-- 
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+# 代码格式化
+为了自动格式化代码，推荐使用clang-format进行代码格式化。
+
+## 代码风格定制
+Doris的代码风格在Google Style的基础上稍有改动，定制为.clang-format文件，位于Doris根目录。
+
+目前，.clang-format配置文件适配clang-format-8.0.1以上的版本。
+
+## 环境准备
+需要下载安装clang-format，也可使用IDE或Editor提供的clang-format插件，下面分别介绍。
+
+### 下载安装clang-format
+Ubuntu: `apt-get install clang-format` 
+
+当前版本为10.0，也可指定旧版本，例如: `apt-get install clang-format-9`
+
+Centos 7: 
+
+centos yum安装的clang-format版本过老，支持的StyleOption太少，建议源码编译10.0版本。
+
+### clang-format插件
+Clion IDE可使用插件"ClangFormat"，`File->Setting->Plugins`搜索下载。但版本无法和
+clang-format程序的版本匹配，从支持的StyleOption上看，应该是低于clang-format-9.0。
+
+## 使用方式
+
+### 命令行运行
+`clang-format --style=file -i $File$` 
+
+`--sytle=file`就会自动找到.clang-format文件，根据文件Option配置来格式化代码。
+
+批量文件clang-format时，需注意过滤不应该格式化的文件。例如，只格式化*.h/*.cpp，并排除某些文件夹：
+
+`find . -type f -not \( -wholename ./env/* \) -regextype posix-egrep -regex
+ ".*\.(cpp|h)" | xargs clang-format -i -style=file`
+
+### 在IDE或Editor中使用clang-format
+#### Clion
+Clion如果使用插件，点击`Reformat Code`即可。
+#### VS Code
+VS Code需安装扩展程序Clang-Format，但需要自行提供clang-format执行程序的位置。
+
+```
+"clang-format.executable":  "$clang-format path$",
+"clang-format.style": "file"
+```
+然后，点击`Format Document`即可。
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diff --git a/docs/documentation/en/developer-guide/format-code.md b/docs/documentation/en/developer-guide/format-code.md
new file mode 100644
index 00000000000000..be5faa3f78d683
--- /dev/null
+++ b/docs/documentation/en/developer-guide/format-code.md
@@ -0,0 +1,78 @@
+<!-- 
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+# Format Code
+To automatically format the code, clang-format is a good choice.
+
+## Code Style
+Doris Code Style is based on Google's, makes a few changes. The customized .clang-format
+file is in the root dir of Doris.
+Now, .clang-format file only works on clang-format-8.0.1+.
+
+## Preparing
+You should install clang-format, or you can use clang-format plugins which support by IDEs or Editors.
+
+### Install clang-format
+Ubuntu: `apt-get install clang-format` 
+
+The current release is 10.0, you can specify old version, e.g.
+ 
+ `apt-get install clang-format-9`
+
+Centos 7: 
+
+The version of clang-format installed by yum is too old. Compiling clang from source
+is recommended.
+
+### Clang-format plugins
+Clion IDE supports the plugin "ClangFormat", you can search in `File->Setting->Plugins`
+ and download it.
+But the version is not match with clang-format. Judging from the options supported, 
+the version is lower than clang-format-9.0.
+
+## Usage
+
+### CMD
+`clang-format --style=file -i $File$` 
+
+When using `-style=file`, clang-format for each input file will try to find the 
+.clang-format file located in the closest parent directory of the input file. 
+When the standard input is used, the search is started from the current directory.
+
+Note: filter out the files which should not be formatted, when batch clang-formating
+ files. 
+ 
+ A example of how to filter \*.h/\*.cpp and exclude some dirs:
+ 
+`find . -type f -not \( -wholename ./env/* \) -regextype posix-egrep -regex
+ ".*\.(cpp|h)" | xargs clang-format -i -style=file`
+
+### Using clang-format in IDEs or Editors
+#### Clion
+If using the plugin 'ClangFormat' in Clion, choose `Reformat Code` or press the keyboard 
+shortcut.
+#### VS Code
+VS Code needs install the extension 'Clang-Format', and specify the executable path of 
+clang-format in settings.
+
+```
+"clang-format.executable":  "$clang-format path$",
+"clang-format.style": "file"
+```
+Then, choose `Format Document`.
\ No newline at end of file