For patients with ankle swelling, mainly due to the following reasons: First, trauma, especially after the trauma caused by the ankle area, ligaments, joint capsule, and internal cartilage or bone damage, which will lead to the ankle area has obvious swelling, pain and activity limitation of the situation. Second, autoimmune diseases, such as rheumatoid arthritis, gouty arthritis, in the erosion of the ankle area, can also lead to swelling and pain in the ankle area. Third, the middle-aged and elderly people have osteoarthritis in the ankle area, which will lead to abnormal friction of the internal cartilage and proliferation of bone to stimulate the surrounding soft tissues when they are moving around, thus causing obvious swelling and pain in the ankle area. Fourth, the cardiopulmonary function is not good patients, which leads to the lower limb parts of the bruise, will also lead to the swelling of the ankle. Fifth, patients with poor kidneys, resulting in sodium excretion disorders, can also lead to edema and pain in the ankle area.