Ultrasound bone density mainly depends on the T value, the normal value of T value is between -1 and +1, which means that the human bone loss and 10% more are normal. Once the human body loses too much bone mass, the T value will gradually drop from -1 to -2.5, which means that the bone mass is decreasing, and it is possible to alleviate the loss of bone density by means of calcium supplementation or sun exposure and exercise. In addition, if the T value drops below -2.5, osteoporosis is considered to be more serious and needs to be treated with medication, and the lower the T value means the more serious the osteoporosis is, so calcium supplementation, osteoporotic triol and appropriate application of sodium allantoin phosphate and other drugs can be used to prevent continued bone loss.