In the prevention of ankle sprain, we should pay attention to the following points: (1) Before exercise, we should clean up the masonry of the sports ground and fill in the potholes. Be prepared for activities, and after the ankle joint is fully active, then do strenuous activities. (2) Running, jumping, skating, playing ball, etc. Pay attention to the correct posture and don't use too much force to prevent the sole from everting inside and outside, so that the whole sole is flat. (3) Pay attention to the exercise of muscles around the ankle joint to enhance the stability of the ankle joint. Such as lift heel, lift heel, squatting and jumping, running up and down slopes, walking on tiptoe, etc. Treatment of ankle sprain: stop exercising immediately, raise the affected limb appropriately, and apply cold compress within 12 hours to prevent further bleeding. 12 hours later, hot compress should be applied to promote inflammation regression. For severe sprain, Da Die Pill and prednisone tablets were taken orally, and camphor wine and turpentine were used externally. Acupuncture at points such as Hanging Bell, Sanyinjiao, Taibai and Yin Zhi also has certain curative effect. For example, dexamethasone is injected at the tender point, and the effect is better. After two days of sprain, patients should be encouraged to exercise their lower limbs as soon as possible, practice walking slowly, and take massage, acupuncture, physical therapy and other measures to restore foot function as soon as possible to prevent local adhesion and muscle atrophy. If you suspect a fibula fracture, please consult a doctor for X-ray diagnosis.