Heavy exercise causes knee pain. Once it happens, we must get rid of the bad incentives, that is, stop exercising immediately. The obvious pain of knee joint is caused by excessive exercise, and the pain is caused by aseptic inflammation caused by injury, so the most important thing is to brake the affected limb and avoid exercise. At the same time, symptomatic treatment should be carried out according to the symptoms, that is, analgesic treatment, which can be taken orally or externally. In addition, it should also be combined with local microwave physiotherapy, and after more than 48 hours, it should also be combined with drug therapy for promoting blood circulation and removing blood stasis.