Patients appear around the knee muscle pain phenomenon, resulting in a number of reasons, the more common reason is around the knee joint due to long-term chronic weight-bearing activities, local muscle strain, in the muscle to affect the metabolism of acid, or affect the normal operation of local qi and blood, local meridian obstruction, will produce pain, swelling of the knee joint area. In the patient’s knee joint area after the cold, will also make the knee joint part of the muscle tissue is always in tension, contraction state, will also appear in the knee joint part of the pain, swelling. After the patient’s knee joint cartilage, meniscus, synovium, fat pads and other tissues are damaged, when flexing the knee joint, it can also pull and stimulate the local lesions, so that the patient will experience pain and swelling in the knee joint area.