1. Active stretching of the flounder muscle in a sitting position: The patient sits in a chair with the legs flexed at about 90 degrees, then moves the affected foot back and places the foot 10 cm back so that the knee on the affected side is flexed less than 90 degrees, presses down on the knee with the healthy leg or the healthy hand to ensure that the back of the foot follows the ground. Hold the stretch for about 10 minutes each time, then relax for how long? Repeat this 2-3 times. After mastering the method, patients can practice this movement on their own. If there is any pain or discomfort during the stretching process, it must be stopped. During the stretching process, the force should be gentle and stable to avoid pain. Also pay attention to ask the patient’s feeling so that the strength of the stretching can be adjusted. If the patient has pain, reduce the strength of the stretching, and if the pain is severe and unbearable, the treatment should be discontinued, and check whether there is any injury, and if there is any injury, it should be treated in time. 2.General treatment once a day, 5-10 times for a course of treatment. 3.Regulate the recording of treatment.