Sleeping up the back of the neck pain is considered to be caused by local cold, trauma, cervical spine lesions, it is recommended to go to the regular hospital. 1. Local cold: in the process of sleeping, the back of the neck is cold or long time cold wind blowing directly, easy to lead to local muscle spasm contraction, caused by muscle tissue microcirculation obstacles, can produce a more serious inflammatory reaction, thus appearing more obvious symptoms of pain and soreness. 2. Trauma: neck localized by sprains and other minor trauma, the pain symptoms may not be very obvious at that time, in the process of rest, may gradually feel around the soreness, or even tingling symptoms. Mainly because the trauma is not serious, the inflammatory response is not obvious, with the aggravation of the inflammatory stimulus, the pain symptoms are gradually aggravated, and then show the back of the neck to sleep up sore. 3. Cervical spondylosis: If you have long-term work in daily life and work, low head to play cell phones and other long-term low head or long time to maintain a posture, you may have cervical spondylosis itself. This disease in the acute stage will appear in the back of the neck pain symptoms, can be up in bed. However, other factors can not be ruled out, such as excessive exercise, myofasciitis, etc. If the rest continues to be unrelieved, it is recommended to consult a doctor in a timely manner, improve the relevant examinations, to clarify the cause of the disease, and then follow the doctor’s instructions to give targeted treatment, so as to avoid delays in the condition.