Osteoarthritis is a chronic arthritis caused by joint degeneration and destruction of joint cartilage. Patients are mostly middle-aged and elderly people over 45 years old. The onset of the disease is slow and often multi-joint. There may be persistent vague pain in the affected joints, which is aggravated by activity and improves after rest. Sometimes there may be acute pain episodes with joint stiffness and a popping sound when the joint is moved. The joint stiffness increases after sitting for a long time and improves after a little activity. In the late stage, there may be swelling and enlargement of the joints and restriction of movement. It can be treated with medication. How to prevent it in daily life? 1, should try to reduce the weight and substantial activities of the joint, in order to slow down the process of lesions. 2, obese people, should reduce weight to reduce the load on the joints. 3, lower limb joints with lesions, the use of crutches or canes to reduce the burden on the joints. 4.Take anti-inflammatory and analgesic drugs as prescribed by the doctor during the attack period, and try to take them after meals. Topical agents can be used locally on the joints. 5.The diseased joint should be protected by a sheath. 6. Pay attention to weather changes and avoid dampness and cold.