Bone density is not the higher the better. Bone density is the amount of mineral content per centimeter of bone measured by a bone densitometer, which helps diagnose osteoporosis and understand whether there is a decrease in bone mass. However, the higher the BMD test is, the better it is, because it only reflects the mineral content of our bones. Some patients have the so-called osteosclerosis, and the BMD is often very high, which also has bad bone quality and is prone to various bone deformities and even fractures. Bone density is usually at its best when it is normal. When we check the bone density, sometimes our body, for example, has done certain surgeries on local bones, such as adding certain metal grafts or bone cements, there will also be a higher bone density test. We are more concerned about the quality of the bones, sometimes we have high bone density but the quality of the bones is not good, for example, in diabetic patients, we find that some people have higher bone density but are still prone to fractures. Therefore, we judge the results of bone density must be combined with clinical.