diff --git a/README.md b/README.md
index e0bbd6a..be5e5ae 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Version rules: a.b.c.
 | branch name | rules |
 | - | :- |
 | master | master branch, do not allowed push code. store the latest stable version. develop branch will merge into this branch once new version created.|
-| develop | develop branch. all the bellowing branches fork from this. |
+| **develop**(main branch) | develop branch. all the bellowing branches fork from this. |
 | feature-\* | new feature branch. forked from develop branch and then merge back after finish developing, testing, and code review. |
 | bugfix-\* | bugfix branch. forked from develop branch and then merge back after finish developing, testing, and code review. |
 | improve-\* | improvement branch. forked from develop branch and then merge back after finish developing, testing, and code review.  |