Bone density measured by ultrasound is not particularly accurate. Ultrasound is used to measure bone density, which is convenient and free of radiation, so it is suitable for some large-scale screening, but the accuracy of this measurement method is less than that of some general X-ray examinations. In addition, because of the small size of the ultrasound equipment, medical personnel can carry this equipment to carry out a large scale screening of the population for osteoporosis. However, the accuracy of these tests is relatively low among all ancillary tests. If it is clear that osteoporosis may exist after such a test, it is best to conduct a review, for example, by using dual-energy X-ray absorptiometry for further measurement and blood tests to clarify the indicators of bone metabolism. In this way, the presence of osteoporosis can be confirmed more clearly.