Exercise for diabetic patients is mainly based on aerobic exercise, especially for the elderly, there are two principles: 1, gradual, gradually increase the amount of exercise; 2, persistence, it is best to exercise about 3 times per week. It is recommended that the exercise time for each session need not be too long, usually about 30 minutes, up to 1 hour. The amount of exercise depends on the person’s condition, generally walking, jogging, swimming, jumping rope, playing tai chi can be. However, if the older elderly, it is recommended to take a brisk walk, walk a little faster on the speed, about 20 minutes to walk. There is a very simple formula for the target heart rate, which is 170 minus age. If the target heart rate is reached, it means that the amount of exercise is sufficient. Frequent hiking, running stairs and other exercise programs are not recommended, especially for the elderly, as they can damage the knee joints and cause injury to the body.