Foot and ankle sprains are the most common acute sports injuries. Ankle injuries are also the most prevalent of systemic joint injuries. Ankle injuries tend to occur while walking, running, jumping, or descending stairs. The etiology of ankle injuries is related to the anatomical and structural characteristics of the ankle joint, as well as overuse and constant weight-bearing pressure. When the foot is plantarflexed during ankle movement, it is prone to inversion, which means that the ankle joint is relatively unstable and prone to sprains during the movement of descending stairs. In addition, the lateral collateral ligaments and muscles of the ankle are weaker than those of the medial side, which is also one of the reasons for easy injury. Ankle injuries are prone to re-injury and chronic functional instability after injury. It is usually important to go to the hospital after an ankle injury to be examined, except for fractures, tendon and ligament injuries. Plain x-rays can observe whether there is any damage to the bones of the foot and are not effective in observing muscle ligament problems. Therefore, it is not possible to exclude other soft tissues from being damaged even if there are no problems with plain x-rays. Rehabilitation after ankle injury or postoperative treatment is very important for the recovery of foot and ankle function, as well as the prevention of repeat injuries. In the early stage of acute injury, the principles of treatment are: local cold compress, compression bandage, elevation of the limb, relative braking. In addition, the rehabilitation program after ankle injury or surgery varies from person to person, depending on the individual’s type of injury, surgical procedure, fracture site, fixation technique, and the impact of bone scab healing. There are usually four phases to go through, each with a different approach to rehabilitation, not a universal one. A scientific rehabilitation program helps to ensure the best functional recovery, and physical therapy helps to reduce swelling and pain and promote healing, but it is important to go to a regular hospital for standardized treatment.