Sports injuries can be divided into acute injuries and chronic injuries. Acute injury is caused by direct or indirect violence during sports, such as abrasions and contusions of skin tissue; sprains and dislocations of joints; fractures; bleeding, edema; concussions, etc. The main symptoms of acute injury are local redness, swelling, heat, pain, skin tissue breakage, bleeding and functional abnormalities, etc. None of the above symptoms are chronic injury manifestations. Chronic injury refers to the functional abnormalities of tissues and organs due to local overload, accumulation of multiple weak injuries or improper treatment of acute injuries into old injuries. Such as rotator cuff strain, patellar tenderness, meniscus wear, etc., manifested as chronic pain and functional decompensation.