Do not use a pillow on the cervical spine is not beneficial. 1. If you do not use a pillow to sleep, the cervical spine will lose the corresponding support force, over time easy to cause the cervical vertebrae physiological curvature straightening, and then a series of symptoms such as neck pain, upper extremity numbness and radiating pain, and even dizziness and headache. 2. If you do not use a pillow, sleeping in a side position will cause the neck tilt, increase the load on one side of the cervical spine, which is very unfavorable to the cervical vertebrae and its cervical back muscle relaxation at night. No pillow support, not only easy to cause pillow fall, in the long run will increase the risk of cervical spine disease. It is recommended to sleep with a pillow of the right height and softness, and to choose the correct sleeping position of lying down or lying on the side.