diff --git a/README.md b/README.md
index 3546c151..c9676580 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,10 @@ Nana is licensed under the [Boost Software License].
 
 The best way to get help with Nana library is by visiting http://nanapro.org/help.htm
 
+## Sending a Pull Request ?
+
+This project is encourage you to contribute it through sending a pull request! There is a simple rule, please don't directly commit your contributions to the master branch. According to your commits, please choose the hotfixes branch or the develop branch. Thank you!
+
 ## Introduction to the Repository
 
 There are two main branches with an infinite lifetime: