Since the course of osteoarthritis is difficult to reverse, its prevention is very important. 1, try to avoid physical obesity to prevent aggravating the burden on the knee joint, once the body is overweight, we should actively lose weight and control the weight. 2, pay attention to walking and labor posture, do not twist the body to walk and work. Avoid squatting for a long time, because the weight of the knee joint when squatting is 3-6 times its own weight, squatting at work (such as car mechanics, sand turners) is best changed to a low sitting position (sitting on a small bench), sitting and standing for a long time, but also often change positions to prevent the knee joint fixed a posture and excessive force. 3, do not wear high heels when walking long distances, wear thick-soled and flexible soft-soled shoes to reduce the impact on the knee joint, to avoid wear and tear on the knee joint. 4, when participating in physical exercise should be well prepared activities, gently stretch the knee joint, so that the knee joint fully active before participating in strenuous exercise. When practicing leg press, do not lift your leg too high to prevent excessive strain on the knee joint. When practicing taijiquan, do not squat too low, and do not play several sets in a row to prevent injury to the knee joint from being overburdened. 5, when riding a bicycle, to adjust the height of the seat, to sit on the seat of the two feet in the pedals, both legs can be straight or slightly bent for the appropriate, the seat is too high, too low or riding uphill when pedaling hard, the knee joint have adverse effects, should be overcome. 6, the knee joint encounter cold, vasoconstriction, blood circulation becomes poor, often making the pain worse, so in cold weather should pay attention to keep warm, if necessary, wear a knee brace to prevent the knee joint from cold. 7. Try to walk up and down the stairs, climb less, stand less, and lift less heavy objects to avoid overloading the knee joint and aggravating the condition. 8, both to avoid excessive fatigue of the knee joint, but also to carry out appropriate functional exercise to increase the stability of the knee joint, to prevent muscle atrophy of the leg, which not only relieves joint pain, but also prevents the progress of the disease, do not think that only rest and inactivity can protect the diseased knee joint. For patients with knee osteoarthritis, swimming and walking are the best exercises that do not increase the weight-bearing capacity of the knee joint, but also allow the muscles and ligaments around the knee joint to be exercised. Secondly, sit-ups, push-ups, bridge arches and the repeated practice of raising and lowering the two retreats on a supine bed, imitating pedaling a bicycle, are all good exercises. 9, in terms of diet, should eat more food containing protein, calcium, collagen, isoflavones, such as milk, dairy products, soybeans, soy products, eggs, fish and shrimp, kelp, black fungus, chicken claw, pig’s feet, lamb leg, beef tendons, etc., these can promote the bones, joints better calcium metabolism, reduce the symptoms of arthritis. 10, early consultation, active treatment. In the early stages of the disease that is given some treatment or rehabilitation exercises, the development of the disease can play a slowing effect.