Moxa stick is used regularly for the treatment of knee diseases. Regular moxa stick smoking of the knee can remove the cold and dampness in the body with the warmth of moxa ignition. For patients with degenerative knee joints and osteoarthritis of the knee joint, the warmth of moxa can remove the cold and dampness in the body, which can effectively prevent the clinical manifestations of the knee joint from being contracted, flexed and extended, and the pain from being aggravated by cloudy days, rain, and seasonal changes. Mugwort itself has a very good effect of warming the meridians, dispersing cold and invigorating the blood. Regularly smoking the knee can improve the blood flow around the knee joint, thus significantly reducing the pain in the knee joint caused by the disease. There are many health care points around the knee joint, and the most effective health care point is the Foot San Li point. Regularly smudging the Foot San Li point with moxa can prevent disease, improve health care, strengthen the body, and improve the spleen and stomach transportation.