Traction on the cervical spine usually has the following adverse consequences: a. Frequent traction leads to relaxation of the joint capsule and surrounding ligaments of the synovial joint, and after a long time, it will lead to a decrease in the stability of the entire cervical spine, resulting in the gradual acceleration of cervical spine degeneration, the formation of osteophytes or calcification, resulting in the extrusion of nerves, blood vessels and spinal cord, and a series of symptoms. Second, in the process of traction, if there is spasm or compression ischemia of the vertebral artery, it may lead to spasm of the cervical vertebral artery by further strain, resulting in a sharp drop in blood supply to the brain, and vertigo, nausea and vomiting will occur. Third, spinal cord cervical spondylosis, that is, disc herniation and spinal stenosis produce obvious extrusion of the spinal cord, in the process of traction, pulling, may lead to further extrusion of the spinal cord, lower limb paralysis or affect the respiratory and circulatory system center, appearing life-threatening situation.