The research and establishment of combat injury coding are important in accurate judgment of war wound, medical documents recording, health resource allocation, medical decision supporting and health service informatization. Mass casualties with complicated injuries, numerous mechanisms and severe wound infection in combat field are not found in civilian trauma, so civilian injury coding is not applicable to combat injury data. In this paper, we reviewed the development of foreign civilian injury coding systems and American military combat coding system, and explored its reference role for Chinese military combat coding research.