Many basic and clinical studies have proven that exercise is one of the successful measures to ensure bone health, and that exercise has different effects on bone at different times, increasing bone mass in childhood, gaining bone mass and preserving it in adulthood, and preserving bone mass and reducing bone loss in old age. Exercise-based rehabilitation programs developed for osteoporosis have been heavily promoted. Exercise can prevent fragility fractures in two ways: improving bone density and preventing falls. Recommendations for rehabilitation therapy: 1. Principles of exercise Individual principle: Due to the differences in the physiological state and motor function of individuals, choose the exercise modality that is suitable for them. Assessment principle: Each individual should be assessed in terms of physiological status including nutrition and organ function when choosing exercise modality. The assessment of actual living ability includes independent living ability, quality of life, etc. Environmental assessment includes living environment, geographical condition of living area, etc. The principle of producing bone effect: weight-bearing, resistance, overload and cumulative exercise can produce bone effect, and resistance exercise has site specificity, i.e. the local bone volume of the bone under stress increases. 2, exercise mode Weight-bearing exercise, resistance exercise. For example: brisk walking, dumbbell exercises, weight lifting, rowing exercises, pedaling exercises, etc. 3.Exercise frequency and intensity There is no consensus on the frequency and intensity of exercise for osteoporosis. Numerous basic and clinical studies suggest that high-intensity, low-repetition exercise can improve the bone mass of the effected bone. The intensity should be such that the muscles feel sore and tired after each exercise, and this feeling disappears the next day after rest. Patients with quadriplegia, paraplegia and hemiplegia are prone to secondary osteoporosis due to nerve damage and muscle disuse, and these patients should increase resistance exercise of the unparalyzed limb as well as weight-bearing standing and functional electrical stimulation.