Sleeping on the stomach at night is very bad for the cervical spine. If the patient sleeps at night, take a prone position sleeping position, may cause the following effects on the cervical spine: 1, in prone, the human body will inevitably tilt the head to one side to keep the mouth and nose open. At this time will be on the neck muscles and important blood vessels and nerves, causing very serious twisting, pulling. If the muscles are twisted and pulled for a long period of time, it may cause muscle spasm, and then the patient wakes up with very obvious pain in the neck. And if the nerves are irritated in this way, it is possible to produce pain in the neck, in one of the upper limbs, and to have sensory numbness. If the blood vessels are stimulated, it will lead to insufficient blood supply to the brain, and then there is blackness in front of the eyes, blurred vision, dizziness and other symptoms. 2, long-term prone sleeping position, may make the cervical vertebrae in an abnormal arc. Because the cervical vertebrae in prone time may produce distortion, and may produce a section forward convex, a section backward convex this abnormal arc. Over time it will accelerate the degeneration of the cervical spine, which will lead to the occurrence of cervical spondylosis. 3, in the prone neck is very easy to get cold, once cold, not only will cause muscle spasm here, but also induced by the neck of the aseptic inflammation, which leads to cervical spondylosis.