The joints of the body move on the rattling may be physiological rattling, may also be osteoarthritis, synovitis, ligament laxity and other pathological reasons. 1. Physiological rattling: due to lack of exercise and other reasons caused by muscle, ligament laxity, in the activities of cartilage, tendons, joint capsule by friction caused by rattling, belong to the physiological rattling. 2. Osteoarthritis: when more than one joint is involved, the patient may have a rattling sound when the joints of the body move, often accompanied by pain, joint swelling and other symptoms. 3. Synovitis: due to infection, trauma caused by synovitis, involving the whole body joints, the patient can appear all over the joints when the movement of the crunching sound, some patients may appear joint swelling, deformity, morning stiffness and other symptoms. 4. Ligament laxity: due to congenital ligament laxity or acquired diseases caused by ligament laxity, patients in the activities of the ligament friction bone joints, patients can appear all over the body joints when the movement of the rattling situation. There may also be other reasons for joints crunching, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.