In daily life, if the patient pedals for a long time, there is a certain damage to the human knee. In cycling, the knee needs to be flexed and extended repeatedly, and it also needs to be stimulated by external forces, which can easily lead to damage to the quadriceps muscle group in the knee joint, or to the cartilage, meniscus and synovial membrane in the knee joint, and the patient may experience chronic and persistent pain in the knee joint, local swelling, interlocking and impingement. After these clinical manifestations, the patient needs to stop the cycling activity, should be bed rest, keep the knee joint area stable, can apply blood circulation and pain relief cream, golden ointment, also can carry out physical therapy, baking electricity, can make the injured muscle tissue to recover as soon as possible.