Prevention of knee pain to do: 1, a reasonable diet, advocating the use of high-quality proteins. 2, the correct use of the principles of human mechanics to solve practical problems in life, the movement of the whole body instead of trunk rotation, do not twist the body to work, squatting when the knee joints of the weight of their own body weight of 3-6 times, so it is not easy to squat for a long time, as far as possible, the use of large muscles or muscle groups to work, such as the extraction of heavy loads, the lumbar muscle The lumbar muscles must cooperate with other muscle groups to reduce the burden on the knee joints.3. Control your weight within the normal range and reduce your weight, which is conducive to reducing the load on the knee joints.4. Add clothes at any time during the cold season, pay attention to keeping warm and preventing the knee joints from getting cold, and wear knee pads if necessary.5. Choose appropriate physical exercise, such as swimming and bicycling, and so on.