Code management is an important part of software development. With the increasing complexity of software requirements and functions, multi-branch development scenarios become more common, which makes the difficulty of code management soar. Also, code leakage between branches arises, seriously affecting the development efficiency and version delivery quality. According to personal code management experience, this study analyzes commonly used branch management modes and explores the solution to the multi-branch code leakage mainly from perspectives of branch development and branch release mode. The practical application results show that the proposed solution can avoid the branch code leakage, optimize the code management process, and improve the overall code management efficiency.