For patients with bad cervical spine, not pillow at bedtime is also bad, in sleep if not pillow, one, it is easy to lead to the back of the neck void, resulting in cold wind invasion, causing cold, resulting in the back of the neck muscle, fascia, ligament spasm contraction, it will cause the back of the neck pain aggravated. Second, no pillow, easy to lead to changes in the curvature of the vertebrae of the neck, causing the curvature of the vertebrae of the neck to straighten, and this situation will be excessive compression of the intervertebral discs between the vertebrae, resulting in disc degeneration, protrusion, will also lead to increased pressure on the cervical spinal cord, nerve roots, blood vessels, aggravating the clinical symptoms of patients. People with bad cervical spine can sleep on a short pillow, but must avoid not pillow, or pillow high pillow, so as not to lead to aggravation of cervical symptoms.