The general principles of knee pain (osteoarthritis) treatment are: light care and medication practice. Protection: prevent cold, tiredness, moisture, wind, such as wearing thin knee pads, do not ride electric bikes, do not go to very humid places, etc., prevent walking with weight, do not do extreme flexion and squatting, etc., when going up and down the stairs, step by step action, or even walk sideways. The lighter the weight, the smaller the load on the knee joint, which helps to reduce the damage to the knee joint; support: walking on crutches, or even double crutches, and then there are some supports that can also be used, currently the more effective support has: Osoanlund free load one, for moderate to severe osteoarthritis of the knee joint, especially the appearance of O, X-leg patients. The effect is very good for patients with O- and X-leg; medicine: oral some blood circulation, promote cartilage regeneration and some non-steroidal anti-inflammatory and analgesic drugs, some heavier can be intra-cavity injection of sodium glacial and hyaluronidase, for some patients have a certain effect; practice: this should be adhered to, and not three days to fish and two days to sunbathe, better methods are swimming, air pedal bicycle, etc., there can also be contact back against the wall squat, but the knee flexion angle should not be more than one day. But the knee flexion angle should not exceed 90 degrees; tai chi and yoga, etc. is not recommended to do those extreme flexion movements, as long as the pain is aggravated to be careful, it is recommended to consult a professional doctor when these conditions arise.