The rattling of moving bones may be caused by physiological reasons, or it may be caused by arthritis, myofasciitis and other pathological reasons. 1. Physiological reasons The sound may be caused by the friction of the cartilage in the joints. It may also be due to the fact that teenagers are now in the stage of development, the imbalance between bone development and the development of the surrounding ligaments and joint capsule, which triggers the internal cartilage of the joints to rub against each other, which triggers the sound of the bones. 2. Pathological causes (1) Arthritis: refers to inflammatory lesions of joints caused by inflammation, infection, trauma or other factors. Joint pain, reduced mobility and other symptoms can occur, which can appear the phenomenon of moving bones will sound. (2) Myofasciitis: It is a sterile inflammation of muscles and fascia. When exercising the joints, the contraction of the myofascia due to inflammation can cause popping and ringing, which can be accompanied by pain and restricted movement of the cervical spine. In addition, the ringing of the bones can be seen in other cases, but if there is no pain or discomfort, basically do not need to be treated. If discomfort occurs, it is recommended to go to the hospital in time.