Older people with degenerative bones are indeed more prone to osteoarthritis, but there are also many young adults who suffer from it, mainly as a result of sports injuries, trauma or long-term occupations that involve repeated use of certain joints. The life span of joints is limited, so young adults should pay attention to joint protection and reduce damage to joints; seek medical attention when joint swelling and pain occur. In addition to age, gender, race and genetic history, most of the factors of osteoarthritis are related to lifestyle, which can be controlled. Therefore, starting now, from a young age, adhering to a healthy lifestyle is the basis for the prevention of osteoarthritis. 1, quit smoking and limit alcohol, and drink less strong coffee, strong tea and carbonated drinks. 2, reasonable nutrition, balanced diet: eat more food containing high calcium and phosphorus, especially milk, dairy products, beans, eggs, green vegetables, kelp, fish, etc.; milk is a good source of calcium and vitamin D. Milk has a high calcium content and is easily absorbed, adults should take 250~500ml of milk daily and pay attention to reasonable meal preparation; adhere to a low salt and low fat diet, drink more water and keep bowel movements smooth. 3, maintain a moderate weight, reduce the burden on weight-bearing joints (such as knee joints, hip joints, spine, etc.). 4, appropriate outdoor activities, increase sunshine: adhere to the daily sunshine 20-30 minutes, can promote the synthesis of vitamin D, is conducive to intestinal calcium absorption. 5, daily wear shoes with a certain degree of flexibility, flat shoes, when going out for a long time activities should wear travel shoes, walking shoes walking; women’s high heels slope to 2cm is appropriate, as far as possible not more than 5cm. 6, adhere to the daily moderate muscle exercise and whole body balance and coordination exercise: exercise is essential to maintain bone and joint health, long-term lack of exercise will accelerate bone loss, it is recommended that appropriate exercise every week, such as walking, running, yoga, swimming, tai chi, etc. Running, yoga, swimming, tai chi, dancing, bicycling, ball games, the elderly can be in situ activities waist and hip, limbs, but exercise should pay attention to the intensity of movement, to prevent bruises, sprains. 7, avoid long time fixed a posture work, such as computer work, low head work, etc., every 1 hour should be active neck, hands up, rotate, do chest expansion, stretch, stretch legs and other activities. 8, the elderly should avoid weight-bearing exercise, such as climbing mountains, stairs, etc. When doing walking exercises, the site should be flat. Maintain a good state of mind and life, work habits, regular rest and rest, regular diet, is conducive to maintaining the balance of the internal environment, may we stay away from the state of sub-health.