The specific exercise method is to apply heat to the knee joint before the exercise, to fumigate the knee joint with Chinese herbs, or to seal the knee joint with local treatment, or to inject sodium glass acid into the knee joint, and to instruct the patient to perform knee flexion exercise. The specific exercise method is: instruct the patient to take the supine position, then bend the hip, bend the knee, do the bicycle movement, in all the movement process, the movement should be slow, do not use violence, so as not to aggravate the degree of injury to the knee joint to produce pain. In addition, when exercising the knee joint, it is best to carry out scientific and correct exercises under the guidance of a rehabilitation doctor, it will be possible to make the local pain-free or reduce the level of pain.