Small splint immobilization is a kind of fracture fixation techniques of traditional Chinese medical orthopedics, which is easy and simple to handle, safe, efficient and cheap.It has made great contributions to the life and health of people in the course of development for thousands of years.The diagnostic approaches of traditional Chinese medicine have been changed when modern medicine has been developed rapidly.Small splint, as traditional featured diagnosis and treatment tool, has changed greatly with the development of science and technology.The development of small splint immobilization lags relative to the development of surgical internal fixation methods.We must study these questions that how to further improve traditional small splint to make it more comfortable and more matching, and strengthen the treatment effect, avoid disadvantages of it.We must gather evidence-based medicine of small sprint for fracture and estimate the curative effects scientifically.We summarized some mechanism about the small splint and some papers about all kinds of the small splint in order to give the corporations some suggestions that are important to develop new small splint which is more practical, safer, better effects and more suitable for clinical use.