There are many causes of ankle sprains, such as insufficient preparation, uneven ground, unsuitable shoes, and lack of concentration during exercise, resulting in accidents. Pain, swelling, subcutaneous bruising, and ankle pain are aggravated when moving around after ankle sprain. The ankle, including the ankle joint and the talocrural joint, is a weight-bearing joint of the lower limb and bears almost all the weight of the body. During excessive forceful inversion or valgus activities, the ankle joint is in plantar flexion position, causing excessive stretching of the ankle ligaments, resulting in partial injury or complete rupture of the ligaments, which can also lead to ligament elongation, avulsion fracture, and subluxation or total dislocation of the ankle joint or tibiofibular joint. If the acute ligament injury is poorly repaired and the ligament is relaxed, it is easy to cause recurrent injury, leading to chronic instability of the ankle joint. If the injury does not involve the ligamentous tissue, the patient can receive regular conservative treatment and follow the POLICE principles of protection, reasonable weight bearing, ice, compression and elevation. In the acute stage, cold compress can be applied within 24-48 hours, 10-20 minutes each time, once every 6 hours, and hot compress for 2-3 days after 48 hours, in order to promote the absorption of local tissue exudate as soon as possible to reduce pain. If necessary, elastic bandage or ankle brace can be fixed by braking for 2-3 weeks. Conservative treatment for chronic injuries is less effective. Improvement of pain and instability is the goal of treatment, sometimes requiring surgical reconstruction of ligaments to improve ankle stability, and minimally invasive ankle arthroscopy to eliminate pain-causing factors such as synovitis, cartilage damage or free bodies. Overall, early consultation, early examination and early treatment are necessary to achieve a good outcome. Generally speaking, the sprained ligament will heal in 2 weeks, but this does not mean that it is completely healed because the healed ligament is not as strong as before the injury, and some of the surrounding soft tissues and sensory cells were also injured and lost their functions at the same time. Sprain. Suitable shoes: shoes are the intermediate medium for the body to contact the ground, buffering the cushioning force between the lower limbs and the ground, providing the stability of the lower limbs and the fit to the ground. 2, good site: good site maintenance is often more important than choosing a pair of suitable shoes, ankle sprain is often the culprit is just a stone, a small mud or a pothole. 3, ankle protection: for people who have sprained their ankle, it is quite important to prevent re-traumatization, you can tie or ankle protection to protect the ankle joint. 4, restore the function of the ankle joint: external protection is never as important as having the ability to control the prevention of ankle sprains again, usually pay attention to muscle strength and proprioceptive training around the ankle joint. 5, adequate preparatory activities before exercise: good and adequate warm-up activities are vital for the heart, lungs, joints and psychological conditioning, and more important for ligaments and muscle tissues to warm up and maximize the mobilization of body tissues to tolerate pressure and impact.