Sprained lateral ankle in children can be seen in ligament injury, ankle sprain, ankle fracture and other diseases. Whether it can be self-healing is related to a variety of factors, such as the type of disease, whether it is treated correctly and timely, whether it is accompanied by pain and swelling, etc., and cannot be generalized. 1. Ligament injury: It is a kind of ligament injury disease, which can be triggered by excessive exercise, violence and other factors. The main symptoms can be manifested as pain and swelling in the affected area; if it is a mild injury, pay attention to rest and apply ice packs in time, which can be gradually relieved; if the injury is serious, arthroscopic minimally invasive surgery and other surgical treatments can be chosen. 2. Ankle sprain: it refers to an injury caused by the activity exceeding the normal activity degree of the ankle joint, which can be caused by strenuous exercise, congenital joint laxity and other factors; the main symptoms are joint pain, joint instability, etc. Patients should pay attention to rest and apply ice in time. Patients should pay attention to rest, timely ice packs, compression bandage joints, if necessary, choose arthroscopic repair and other surgical treatment. 3. Ankle fracture: it refers to intra-articular fracture of the ankle caused by joint stress, which can be caused by violence, improper walking posture and other factors; the main symptoms can be manifested as joint pain and swelling, deformity, etc.; the clinical application of manipulation, incision and reset and other surgical treatments. If a child’s lateral ankle is twisted, he or she should go to the hospital in time for examination to determine the cause of the injury and actively cooperate with the doctor’s treatment.