Neck pain may be physiological factors, but also may be the manifestation of certain diseases, such as cervical spondylosis, neck and shoulder muscle strain, neck trauma, etc., should promptly identify the cause of the disease. 1. Physiological factors: If the neck is in an incorrect posture and fall asleep, resulting in poor local blood flow, it may also cause pain in the back of the neck, which can be recovered on its own. 2. Pathological factors (1) Cervical spondylosis: when cervical disc degeneration occurs, it is easy to have neck or neck and shoulder pain and tension. (2) Neck and shoulder muscle strain: when the head is often bowed, the neck muscles are in a state of contraction for a long period of time, which will easily lead to chronic strain and chronic injury, and at this time there will also be soreness in the neck. (3) Neck trauma: the back of the neck is subjected to external forces, which can also lead to soreness in the muscles at the back of the neck. Usually need to pay attention to the correct protection of the cervical spine, avoid long time low head work, work for a period of time after appropriate rest, activity cervical spine. However, other factors can not be ruled out, if the rest does not relieve, it is recommended to consult a doctor in time, improve the relevant examination, to clarify the cause of the disease, and then follow the doctor’s instructions to give targeted treatment.