The report of dual-energy X-ray bone densitometry generally includes information about the patient, images of the measurement site, bone density results, data, doctor’s recommendations, etc. Among them, the values that guide the results are T-value and Z-value. The Z value is mainly used for the diagnosis of osteoporosis in children, but can reflect the severity of osteoporosis in adults. When T value > -1, it is a normal value and patients are advised to ensure daily diet and exercise. 2, When -2.5 < T value < -1, it is a decrease in bone mass and patients are advised to pay attention to daily diet, such as consuming more calcium-rich foods like milk, fish and shrimp, soy products, and vitamin D-rich foods like egg yolk and cod liver oil, and to be more active in the sun to promote bone The patient should be more active in the sun to promote bone formation, reduce bone loss and slow down the progress of osteoporosis. It should be noted that elderly patients should choose appropriate exercises, such as walking and Tai Chi, according to their condition; 3. When T value <-2.5 indicates osteoporosis, it is recommended that patients must immediately take additional calcium or vitamin D supplements according to their symptoms, adjust their diet in time, get more sunlight and be properly active. Elderly patients with osteoporosis are likely to feel overly worried out of concern for their bodies, and their families need to provide timely care and psychological guidance to such patients. When the Z value is less than -2, it means that the patient's test results are lower than the average range for the age, sex and ethnic group. The Z value is generally more relevant for people under 30 years of age. Prevention of osteoporosis 1. daily intake of appropriate amounts of calcium and vitamin D; 2. regular weight-bearing exercise, with sunlight recommended; 3. patients need to quit smoking and limit alcohol in a timely manner; 4. bone density testing and medication at the appropriate time. Patients need to note that one measure alone is not enough to prevent osteoporosis, but follow the above multiple methods to effectively prevent osteoporosis.