The loss of physiological curvature of the cervical spine is a reflection of cervical spondylosis on radiographs. Anatomically speaking, the cervical spine has a forward physiological curvature, and the muscles, blood vessels, nerves and ligaments around the cervical spine adapt to the normal anatomical structure. However, after the physiological curvature of the cervical spine is straightened, the muscles and ligaments behind the cervical spine will be strained, leading to accelerated degenerative changes in the cervical spine and further compression of nerve roots and blood vessels, resulting in numbness or dizziness in the upper limbs, nausea, pain in the muscles behind the cervical spine, and other lesions. Mainly in daily life, often playing with the cell phone with the head down, ambling work, reverse and cervical physiological curvature of the action to do too much, the accumulation of months to form. The physiological curvature of the cervical spine disappears, you should usually avoid prolonged low head, do more head lifting movements, sleep with a pillow that is not too high, and do more sports with more head lifting movements such as swimming, kite flying or playing badminton.