diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 0000000..fd55bef
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,80 @@
+# CODEOWNERS로 코드 리뷰어 지정하기
+*	   @seungwonme
+
+# This is a comment.
+# Each line is a file pattern followed by one or more owners.
+
+# These owners will be the default owners for everything in
+# the repo. Unless a later match takes precedence,
+# @global-owner1 and @global-owner2 will be requested for
+# review when someone opens a pull request.
+
+# *       @global-owner1 @global-owner2 
+
+# Order is important; the last matching pattern takes the most
+# precedence. When someone opens a pull request that only
+# modifies JS files, only @js-owner and not the global
+# owner(s) will be requested for a review.
+
+# *.js    @js-owner #This is an inline comment. 
+
+# You can also use email addresses if you prefer. They'll be
+# used to look up users just like we do for commit author
+# emails.
+
+# *.go docs@example.com 
+
+# Teams can be specified as code owners as well. Teams should
+# be identified in the format @org/team-name. Teams must have
+# explicit write access to the repository. In this example,
+# the octocats team in the octo-org organization owns all .txt files.
+
+# *.txt @octo-org/octocats 
+
+# In this example, @doctocat owns any files in the build/logs
+# directory at the root of the repository and any of its
+# subdirectories.
+
+# /build/logs/ @doctocat 
+
+# The `docs/*` pattern will match files like
+# `docs/getting-started.md` but not further nested files like
+# `docs/build-app/troubleshooting.md`.
+
+# docs/*  docs@example.com 
+
+# In this example, @octocat owns any file in an apps directory
+# anywhere in your repository.
+
+# apps/ @octocat 
+
+# In this example, @doctocat owns any file in the `/docs`
+# directory in the root of your repository and any of its
+# subdirectories.
+
+# /docs/ @doctocat 
+
+# In this example, any change inside the `/scripts` directory
+# will require approval from @doctocat or @octocat.
+
+# /scripts/ @doctocat @octocat 
+
+# In this example, @octocat owns any file in a `/logs` directory such as
+# `/build/logs`, `/scripts/logs`, and `/deeply/nested/logs`. Any changes
+# in a `/logs` directory will require approval from @octocat.
+
+# **/logs @octocat 
+
+# In this example, @octocat owns any file in the `/apps`
+# directory in the root of your repository except for the `/apps/github`
+# subdirectory, as its owners are left empty.
+
+# /apps/ @octocat 
+# /apps/github 
+
+# In this example, @octocat owns any file in the `/apps`
+# directory in the root of your repository except for the `/apps/github`
+# subdirectory, as this subdirectory has its own owner @doctocat
+
+# /apps/ @octocat 
+# /apps/github @doctocat 
diff --git a/PR.md b/PR.md
new file mode 100644
index 0000000..4b5d84e
--- /dev/null
+++ b/PR.md
@@ -0,0 +1,3 @@
+Pull Request를 만들기 위한 파일입니다.
+
+댓글을 달 수 있습니다.
diff --git a/README.md b/README.md
index c6be54f..1a4b371 100644
--- a/README.md
+++ b/README.md
@@ -8,12 +8,18 @@
 
 ![](./img/GitWorkflow.png)
 
-## Git Branch Model
+## Git Branch
+
+### Git Branch Model
 - [{Git,Github,Gitlab} Flow 1](https://ujuc.github.io/2015/12/16/git-flow-github-flow-gitlab-flow/)
 - [{Git,Github,Gitlab} Flow 2](https://wiki.yowu.dev/ko/dev/Git/about-git-github-gitlab-flow)
 - [Trunk Based Development](https://trunkbaseddevelopment.com)
 - [Trunk Based Development 기술 블로그](https://tech.mfort.co.kr/blog/2022-08-05-trunk-based-development/)
 
+### Git Branch Policy
+- [Branch Protection Rule](https://docs.github.com/ko/repositories/configuring-branches-and-merges-in-your-repository/managing-protected-branches/managing-a-branch-protection-rule)
+- [CODEOWNERS file](https://docs.github.com/ko/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners)
+
 ## Git Command
 
 ### restore