Exercise therapy Recent studies have concluded that the proportion of the effect of exercise on bone strength far exceeds the effect of related hormones, calcium and VitD on bone strength, and is a positive factor in influencing bone mass and maintaining bone health. 1, the intensity of exercise: to feel good, slightly fatigue, after rest soon recovered as the principle, and the whole body parts without obvious soreness. Generally for medium intensity is appropriate. 2, the amount of exercise: generally should reach 70%-85% of the maximum heart rate, which can not only effectively increase bone density, prevent and delay bone loss, but also enable the body to get a comprehensive exercise, improve health and improve physical fitness. Currently the most widely used and easy to simply calculate is: the optimal heart rate range of exercise = (age) × (70%-85%). 3, the form of exercise: Intervention forms are diverse, including resistance exercise, aerobic exercise, weight-bearing exercise, etc. The effect of different forms of exercise on the impact of osteoporosis varies. Some scholars found that the increase of hip bone mass by increasing the load of exercise is significantly better than that by increasing the number of repetitions, while doing swing training with the help of swing table can also increase the bone density of hip bones. 4, exercise frequency and duration: It is recommended that moderate intensity exercise such as walking, tai chi, etc. more than 4-5 times a week, 45-60min each time, generally adhere to 6-12 months, can appear in some parts of the bone density increase or loss of delay. 5, the type of exercise: walking, tai chi, mulanquan, jump rope, etc.