Rattling sounds in the neck when turning the head may be due to cervical spondylosis. It is mainly due to degeneration of the joints in the cervical spine area, which can cause the ligaments around the joints to relax and the joints to become unstable, and the popping sound can be caused when the patient twists his head or when he moves around. It may also be caused by the vibration of the gas in the joint cavity as the patient maintains one position for a long time in daily life. In addition to the above, the sound may also be caused by a disruption in the function of the small joints and wear and tear on the articular cartilage. If there is a sound in the neck, the patient should go to the hospital for a CT examination to find out what kind of disease is causing the sound, and then give targeted treatment.