Acute ankle sprains, commonly known as ankle fractures, are one of the most common traumatic injuries in orthopedic emergencies, leaving some sequelae in as many as 40% of patients. If neglected and not treated correctly and in a timely manner, they often leave sequelae such as ankle instability, which may eventually lead to serious consequences such as arthritis. In acute ankle sprains, the first thing that occurs is bruising and swelling around the joint, and pain, etc. Most patients go to the hospital to determine if there is a fracture. If a fracture occurs, the patient will be very cooperative with the doctor. However, over 80% of ankle sprains do not have a fracture, or the fracture is small and hidden and not easily detected. Most patients refuse the doctor’s recommendation of external fixation because the local swelling and pain will improve after 1 to 2 weeks of rest. It is not known that after ankle sprain, there is no ankle fracture and there must be ligament rupture or tear, and we have confirmed through surgery that even if a fracture occurs, the ligaments of the joint will be damaged or even ruptured at the same time. If no timely and reliable external fixation or surgical repair is given, the serious consequence of ankle instability is inevitably left behind, which is what we often encounter with the old broken foot. Improper treatment at an early stage will not only lead to long-term swelling and pain in the ankle joint, but may also lead to joint damage in the ankle joint due to repeated ankle sprains, which can lead to arthritis in severe cases. The vast majority of patients with ankle pain seen clinically have a history of ankle sprain, therefore, ankle sprain is the main cause of ankle pain and is one of the culprits of ankle arthritis. We also found three cases of talar osteonecrosis due to ankle sprains, and once these occur, complete clinical healing is almost impossible. The traditional concept of how to properly manage ankle sprains and avoid sequelae needs to be changed. In mild ankle sprains, the torn ligaments can heal again after 3 weeks of proper external immobilization, such as long segments of tape immobilization or braces, elevation of the affected foot, and rest, but strenuous exercise should be avoided for 6 months. Severe ankle sprains, especially when there is a transient dislocation of the joint, are bound to be complicated by rupture of important ligaments and must have exact external fixation or even require surgical repair of the ligaments. Repeated foot fractures are actually a sign of ankle instability, and timely ligament repair and reconstruction can prevent arthritis to some extent. In recent years, the development of ankle arthroscopy technology has made it possible to perform minimally invasive surgery and treat some intractable joint pain through arthroscopy. In conclusion, ankle sprains must be treated early and promptly. Although 60% of patients can recover without treatment, the risk of more than 40% of sequelae occurrence is more than worth the loss. Good living habits are important for joint function rehabilitation and health care: in the morning or before sunset, you can improve the functional state of the joints by walking slowly, specifically: relax your whole body, gait naturally, exclude distractions, only feel the feeling when your feet hit the ground and lift up, physical and mental pleasure, walk for a few minutes in front, step backward for a few minutes, lightly fall and lightly rise. Long-term persistence will receive unexpected results.