The ankle joint is a weight-bearing joint of the lower limbs. During excessive strong inversion or valgus activities, such as walking on an uneven surface, falling from a height or landing unsteadily when running and jumping, can cause ankle sprains, resulting in partial tears, complete ruptures of the lateral or medial ligaments or accompanied by avulsion fractures. After orthopedic department of Peking Union Medical College Hospital, sometimes the local pain is not too heavy and the swelling is not obvious. At this time, if you insist on walking, it will aggravate the ligament injury, and the pain and swelling will be obvious and the subcutaneous bruising will be serious. (1) Immediately after the injury, go to the hospital for X-ray examination to exclude fracture and dislocation, if there is fracture or dislocation, reset and fixation should be given in time. (2) In the early stage of ankle sprain, it is advisable to brake and give appropriate fixation according to the condition so as not to aggravate the injury bleeding, and at the same time, ice can be applied, not heat. 1 to 2 weeks later, release the fixation and carry out functional exercise. (3) During the recovery period of ankle sprain, massage the injury site, but the technique should be gentle and slow, with local hot compress, or blood circulation of Chinese medicine external washing, often can receive more satisfactory results. (4) Pay attention to the local area of the injury to prevent cold and keep warm. If the ankle sprain is not treated properly in the early stage, excessive ligament relaxation will cause instability of the ankle joint, which will easily lead to repeated sprains and even articular cartilage damage and traumatic arthritis. Long-term unexplained pain and swelling in the ankle, with reduced mobility areas, can seriously affect walking function. If this occurs, further treatment needs to be considered. Non-surgical treatment is mainly oral nourishment of joint cartilage and non-steroidal anti-inflammatory and analgesic drugs and physical therapy. 2.Surgical treatment mainly includes (1) Arthroscopic debridement, which is suitable for cases where there are free body edge spurs in the joint, but the weight-bearing surface of the joint is still relatively intact. (2) Osteotomy, suitable for obvious joint internal and external rotation and fracture obvious angular deformity healing. (3) Joint fusion, for patients with severe joint damage who are relatively young and need to perform walking or standing work. (4) Artificial ankle joint replacement is suitable for elderly people with severe pain and joint destruction. Patients do not have pain when walking on the ankle joint after surgery and have a certain range of motion of the joint. Therefore, ankle sprains should be treated promptly so that the damaged tissues can be well repaired. Those with ligament rupture or avulsion fractures that affect joint stability need to undergo surgical repositioning and repair to avoid repeated sprains, articular cartilage damage and traumatic arthritis.