Acupuncture is very effective for all kinds of pain, and acupuncture is the same for knee pain, which can effectively relieve knee pain. Acupuncture for knee pain, first of all, it is necessary to identify the evidence, to examine the patient, and then to identify the meridians according to the signs that appear in the patient’s examination. Second, it is also necessary to distinguish its etiology, exactly why the pain appears, and where its most fundamental cause is. The following are the causes of knee pain: First, there can be trauma, strain, and also muscle and joint sprains caused by poor posture. Second, there can be degenerative lesions, degenerative lesions of the bone and joint. Third, it may be a problem of meniscus, or it may be a joint injury caused by immune disease or rheumatic disease. Fourth, damage caused by metabolic diseases, such as gouty myoarthritis, can cause knee pain. Knee pain can be treated locally, but it is more important to treat the cause, because without eliminating the cause, it is difficult to get to the root of the pain.