5.Conclusions(1) The swimming player's easily injured parts are ankle, fingers, wrists, shoulders, waist, etc. The most serious injuries are sports injuries. Sports injuries can cause the athletes' training to not proceed further. Its degree of sports injury is divided into mild, moderate and severe. Mainly suffered from high-intensity injuries in confrontation sports.(2) Finger joint injury is a common clinical joint disease, and the pain symptoms seriously affect the physiological function of finger joints. Needle knife treatment of finger joint injury can effectively improve joint swelling and pain. And can improve our quality of life.(3) Acupuncture knife has good effect on treating swimming player's finger joint injury, and the later rehabilitation effect is more satisfactory. This is a safe and effective treatment.