I. Cervical spine The cervical spine: the area below the head and above the thoracic spine, consists of seven vertebrae and five intervertebral discs, as well as joint capsules and ligamentous structures to provide mechanical stability. It not only supports the head and connects to the body, but also supports the blood vessels and nerves that connect the head to the body. Cervical spondylosis: also known as cervical spine syndrome, is a general term for cervical osteoarthritis, proliferative cervical spondylitis, cervical nerve root syndrome and cervical disc prolapse, which is a disorder based on degenerative pathological changes. The basic cause of cervical spondylosis is “degenerative change” of the cervical disc, which can be understood as “aging”. After the aging of the intervertebral disc, the center of the nucleus pulposus tissue dehydrates and hardens, and the outer fibrous ring is weak, which over time may cause the disc to protrude and compress the nerve, causing cervical spondylosis. 2, cervical spine bone spurs: bone spurs is a compensatory mechanism of the human body, when the spine is unstable bone will proliferate to increase the strength of the spine. The bone spur itself is not a bad thing, but when the proliferating bone spur compresses the nerve to produce symptoms, it will cause cervical spondylosis. 3, head and neck trauma: trauma to the neck (such as twisting to the neck, strain, etc.) can cause spasm, strain and muscle imbalance of the cervical muscle, resulting in changes in the physiological curvature of the cervical spine, resulting in cervical joint capsulitis and ligamentous laxity, making the cervical joint connection unstable and causing cervical spondylosis. 4, bad posture: long-term bad posture is also a cause of cervical spondylosis, which is most prominent in sitting and sleeping posture, especially in watching TV, reading books, playing computer, easy to appear bad sitting posture, for example: leaning forward to sit, tense back sitting, upper body bending forward to sit, driving forward to sit, etc. 5, genetic factors: cervical spine due to congenital dysplasia, spinal stenosis, etc., the ability to withstand and resist pressure are poor, causing cervical spine disease or the incidence is higher than other people with normal development. 6, chronic infection: more common are pharyngitis, dental caries, periodontitis, otitis media and other parts of the disease development to a certain extent will have an impact on the cervical spine. 7, cold stimulation: cervical spine stimulated by cold, or a long time in the dark, humid environment, may lead to muscle spasm in the neck, atrophy, vasoconstriction, causing local stiffness of the cervical spine, thereby accelerating the onset of cervical cervical spondylosis. 8, smoking: tobacco contains many harmful substances, such as nicotine will make small blood vessels spasm, affecting the blood supply of local tissues; carbon monoxide gas can destroy the nutrient supply of intervertebral discs, accelerating the process of degenerative disc degeneration; if cervical spondylosis requires surgical treatment, due to smoking patients with more phlegm in the airway during surgery, there is a risk of inducing pneumonia, and may even cause asphyxia.