Pillow is too high will cause neck discomfort, long-term use of high pillow lying position, will cause cervical curvature straightening, loss of the original curvature, caused by cervical instability, will pull the cervical spine around the nerves, blood vessels, muscles, causing the corresponding symptoms, the common neck pain, headache, cervical spine and the head around the tightly bound, neck and shoulder pain and swelling; dizziness, drowsiness, the mind is not clear sense of concentration, irritability, and so on. Slowly, the cervical curvature becomes straightened and serious enough to develop into cervical reverse curvature and disc herniation, resulting in aggravation of symptoms.