Straightening of the physiological curvature of the cervical spine is a basic pathological change of cervical spondylosis, which can bring about various consequences. 1. it can cause tension and spasm of the muscles on the back side of the cervical spine, resulting in cervical pain and limited range of motion. 2. it can cause excitation of the sympathetic nerves, resulting in sympathetic cervical spondylosis such as panic and chest tightness. 3. the straightening of the physiological curvature of the cervical spine can also stimulate the vertebral artery, resulting in tension and spasm of the vertebral artery, resulting in insufficient blood supply to the brain, resulting in dizziness and nausea. 4. On top of this pathological change, cervical instability can occur, and over time, cervical disc protrusion can occur, compressing the spinal cord and nerves behind, resulting in upper limb numbness, pain or lower limb weakness, or even serious limb weakness and paralysis. And the above-mentioned condition is not formed in 1-2 days, it is caused in a state where there is cervical curvature straightening, which is not relieved by systematic treatment and is still gradually aggravated.