Osteoporosis is common in the elderly, accounting for approximately 20% to 50% of the elderly population. It is especially common in people with poor gastrointestinal function and lack of outdoor activities. Some people may have low back pain, which is aggravated when they get up and stand for a long time, and sometimes combined with calcium deficiency such as calf “cramps” at night. Some people may not feel it at all and do not notice severe osteoporosis until they have a fracture. In some cases, osteoporosis may affect daily life, or in others, it may lead to paralysis and bedridden due to fractures of the femoral neck and spine, which seriously affects the quality of life of the elderly. Therefore, in western developed countries, bone density checkup has been listed as a routine medical checkup for the elderly, and annual monitoring is conducted for early prevention and treatment. The new GE whole-body dual-energy bone densitometer (DEXA) introduced by our hospital can measure bone density in any part of the body with high measurement accuracy and can be repeatedly compared. In contrast, the popular single photon and ultrasound measuring instrument in previous years can only measure the bone density of hands and feet, indirectly reflecting the bone condition of spine and hip, which is relatively rough. In people with normal ultrasound measurements, examined with dual-energy bone densitometry, many were still found to suffer from osteoporosis. Therefore, the World Health Organization and the Chinese Osteoporosis Society recommend the use of dual-energy bone densitometry. If a decrease in bone mass or osteoporosis is detected, it should be actively prevented and treated. Live a healthy life and care for your bones. Prevention of osteoporosis is important. During adolescence, we should take part in more sports to increase the strength and reserve of bones, avoid unhealthy lifestyles such as overnight Internet surfing and long-term sedentary, take fewer cars and elevators, walk and climb stairs as much as possible; adults should actively treat chronic diseases such as chronic gastroenteritis, tuberculosis and bronchitis, and for diseases requiring long-term use of immunosuppressants and glucocorticoids, we should enhance calcium supplements and active vitamin D. After menopause, women should monitor their bone density and go to obstetrics and gynecology for estrogen replacement therapy if indicated; in old age, they should participate in more outdoor activities, get more sunlight in winter, insist on daily activities, eat more milk, shrimp, kelp, sesame, walnuts and other foods with high calcium content, and eat less coffee, cigarettes, acetic acid, wine and other stimulating foods. As age increases, the strength and bone density of bones will inevitably decline year by year. Therefore, according to age and their own physical condition, according to their strength, do not carry the heavy work that can not bear, so as not to cause lumbar compression fractures. However, some elderly people want to say, I take calcium supplements and calcium tablets every day, how can I still suffer from osteoporosis? This is because the body’s absorption and utilization of calcium is a complex process, and as we age, it is difficult to absorb calcium supplements from the gastrointestinal tract alone. A comprehensive regimen is needed for each individual case. First, the gastrointestinal absorption function will be improved, then the absorption of calcium from the gastrointestinal tract will be promoted, and furthermore, the deposition of calcium into the bones should be promoted. In addition, calcium supplementation should be prevented in excess to avoid the formation of ectopic calcification and kidney stones. Therefore, osteoporosis also requires frequent review and consultation at outpatient clinics.