diff --git a/doc/source/codestyle.rst b/doc/source/codestyle.rst
index 9abae83336d627c7badc3060d7a8c206ea34eb32..24676ac9a0a7bf7373103040203f3005057fc129 100644
--- a/doc/source/codestyle.rst
+++ b/doc/source/codestyle.rst
@@ -11,8 +11,8 @@ More specifically,
 Numpydoc style, conf https://numpydoc.readthedocs.io/en/latest/format.html
 
 
-标记语言
-=======
+Markup language
+===============
 
 标记语言(Markup language) 可以分为三类
 
diff --git a/doc/source/git.rst b/doc/source/git.rst
index f81803556832e87908220d21ef020a0dcdcac3ed..d8e6ee8f3ceee6ef6e142dbef16becbb735d6a42 100644
--- a/doc/source/git.rst
+++ b/doc/source/git.rst
@@ -1,5 +1,5 @@
-为什么需要版本控制
-===============
+Why version control?
+====================
 
 版本控制有两个最重要的好处，即
 
@@ -27,19 +27,19 @@
     - 参考书《Pro Git (2nd Edition)》：https://git-scm.com/book/en/v2
 
 
-`git` 的基本使用
-===============
+Basic usages
+============
 
-如何建库
--------
+Create a new project/repository
+-------------------------------
 在gitlab或者github页面中点击 `New Project` 即可在自己的账户下或者拥有权限的组织中新建代码库(repository)。
 
 
-克隆远程代码库到本地
+Clone remote code
 -----------------
 
 
-CSST gitlab
+CSST GitLab
 ===========
 CSST 项目利用国家天文台的服务器提供了GitLab服务，网址为 https://csst-tb.bao.ac.cn/code/。
 
diff --git a/doc/source/index.rst b/doc/source/index.rst
index ef0a1db141f8136f1d4826e3879e2a987daf88a5..a3e44a1c8a3fe81d88d070c1ad4c7bfb86b7892d 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -3,8 +3,8 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-CSST一级流水线原型
-================
+CSST pipeline prototype
+=======================
 
 .. meta::
    :description lang=cn: Automate building, versioning, and hosting of your technical documentation continuously on Read the Docs.
diff --git a/doc/source/unittest.rst b/doc/source/unittest.rst
index 9dbffba0a70c5afd52a606c0f63e54e8010907a0..b54e57563d072c4cf080f085a363b6c3bdfe3e30 100644
--- a/doc/source/unittest.rst
+++ b/doc/source/unittest.rst
@@ -1,5 +1,5 @@
-单元测试相关的pacakge
-===================
+Useful packages
+===============
 
 use
 
@@ -9,7 +9,7 @@ use
 - `coverage`
 
 
-gitlab CI/CD pipeline
+GitLab CI/CD pipeline
 =====================
 
 自动化流水线。