Bone rattling may be a physiological phenomenon, or it may be caused by osteoporosis, bone fracture and other diseases. 1. Physiological phenomenon: If the body does not exercise for a long time, it is easy to cause a decrease in the lubricating fluid in the joints, increasing the friction in the joints, and then there will be a ringing of the bones, which is a normal physiological phenomenon. 2. Osteoporosis: This disease is mainly caused by the decrease of bone formation and the increase of bone resorption, which may be related to the abnormal bone metabolism, the decline of organ function and the decrease of hormone level, and may also be secondary to the hyperthyroidism, gout and other diseases. As osteoporosis will cause calcium deficiency, and when the body is chronically deficient in calcium, it is easy to lead to joint disorders, affecting normal activities, followed by the sound of rattling bones. 3. Fracture: The occurrence of this disease is related to the causes of direct tyrannical carillon, indirect violence, and cumulative strain. Usually when fracture occurs, bone rubbing sound or bone rubbing sensation can be produced when the fracture ends rub against each other. There are many causes of bone rattling sound, if excluded is physiological factors, you need to go to the hospital in time to clarify the specific cause.