1.Cervical type Degenerative changes of cervical discs, acute and chronic injuries to neck muscles, ligaments and joint capsule, and misalignment of small joints are the basic causes of this disease. It causes local or reflexive head, neck and shoulder pain in the cervical spine. 2.Nerve root type Cervical disc herniation, cervical spine hyperplasia, hook spine joint and posterior joint degeneration, stimulation and compression of spinal nerve root, causing sensory and motor dysfunction. It is also divided into two types: acute and chronic. Feng Guojun, Department of Orthopedics, Second Hospital of Hebei Medical University 3, spinal cord type The spinal cord is compressed and ischemic due to factors such as bone redundancy at the posterior edge of the vertebral body, displacement of the vertebral body, hypertrophy of the ligamentum flavum, and spinal cord injury, causing spinal cord conduction dysfunction. 4, vertebral artery type due to degenerative changes in the hook vertebral joint, stimulation, compression of the vertebral artery, resulting in inadequate blood supply to the vertebral artery; or intervertebral disc degeneration, shortening the total length of the cervical spine, the vertebral artery and cervical length balance is disrupted. 5, sympathetic type degenerative changes in the cervical intervertebral disc, stimulating and compressing the sympathetic nerve fibers in the neck, causing a series of reflex symptoms. 6.Other type refers to the esophageal compression type, which is caused by the compression of the esophagus by the bony flab at the anterior edge of the vertebral body.