(1) Nerve root type: The stimulation of cervical disc degeneration or osteophytes compresses the spinal nerve roots, causing sensory and motor dysfunction of the upper limbs, often manifesting as motor impairment or sensory numbness of one upper limb segment. (2) Spinal cord type: cervical disc herniation, ligamentous hypertrophy and ossification or other causes of cervical spinal stenosis, spinal cord compression and ischemia, resulting in spinal cord conduction dysfunction. In some cases, the disease starts in the upper limbs and progresses to the lower limbs; in some cases, the disease starts in the lower limbs and progresses to the upper limbs. The main manifestations are unstable walking, numbness of the limbs, and difficulty in urination and defecation. (3) Vertebral artery type: Due to the stimulation of degenerative changes of the hook vertebral joint, compression of the vertebral artery, resulting in inadequate blood supply to the basilar artery, often accompanied by dizziness, dark haze and other symptoms, related to the rotation of the neck. (4) Sympathetic nerve type: stimulation of degenerative changes of the cervical disc, compression of sympathetic nerve fibers in the neck, causing a series of reflex symptoms, is clinically rare, and often mixed with cardiovascular disease, endocrine disease, etc., and difficult to identify. (5) Other types: refers to the esophageal compression type with foreign body sensation in swallowing, which is very rare clinically.