Knee pain should be selected according to different situations: 1, if the pain is unexplained swelling, suffering from knee flexion and extension activity is limited, it may be synovitis, patellar chondromalacia, knee osteoarthritis or meniscal degeneration injury, need to see the orthopedic department in the hospital, for the film examination is not particularly serious, can do conservative treatment, oral nourishing cartilage drugs, soothe the tendons and blood medicine, do physical therapy. 2, if the bilateral knee pain, symmetrical distribution, may be rheumatoid arthritis, need to see rheumatology, if the diagnosis is rheumatoid arthritis, need to pay attention to joint warmth, oral anti-rheumatic drugs. 3, if the knee pain with numbness, may be lumbar disc herniation compression nerve caused, need to see the spine surgery, if the disc herniation compression nerve, do traction, acupuncture, physiotherapy, The physiotherapy.