Ligament strain will affect walking, the ligaments of any joint have a good stabilizing effect on the joints in motion, for example, the ligaments of the knee joint have anterior cruciate ligament, posterior cruciate ligament, medial collateral ligament, lateral collateral ligaments, and if these ligaments are injured or strained, it will lead to limited activities. If you can’t protect these ligaments in time after the injury, or get treatment in time, it will lead to degenerative changes in the joints in the long run, affecting the function of the joints, and it is easy to pull the ligaments up in daily life, so it is necessary to warm up sufficiently before the activity. The knee joint in particular has the greatest impact on walking, and if there is damage to the ligaments in the knee joint, the consequences are often severe. Ligament damage is often not shown by X-rays and needs to be detected by MRI. Early diagnosis can be made by some physical examination methods, such as the drawer test and the Ruffman test. For its treatment can be through non-surgical treatment and surgical treatment, non-surgical treatment is to promptly carry out the immobilization of the brace to limit the activities, so that the ligament itself is repaired, seriously the ligament itself is repaired, the surgical method can be through the arthroscopic ligament reconstruction and other methods to repair the ligament.