The rattling of the bones when the mouth opens is mostly due to temporomandibular joint disorder, which can be self-healed if the symptoms are mild, but cannot be self-healed if there is already pain and mouth opening is restricted, and treatment is usually needed. 1. Self-healing. For non-functional joint popping, not accompanied by pain and mouth limitation, protective measures can be taken, eat less hard food, local moist and hot compresses, physiotherapy, mild symptoms can be self-healing. 2. Can not be self-healing. For opening and closing the mouth with joint popping, and the joint area gradually appear pain, opening and limiting the mouth, it means that the symptoms have worsened, generally need to be treated in order to return to normal, can be injected in the joint cavity hyaluronic acid. If the mouth popping after examination, there has been an osteoarthropathy can not be self-healing, but also need to carry out arthroscopic surgery in order to treat. Mouth open the joints sound can be self-healing, specific need to go to the hospital to do clinical examination of the oral cavity and CT examination to determine.