Improper posture in daily work, especially long-term ambulatory workers; poor sleep position, including pillow too high; inappropriate sports exercise, more than the neck endurance activities or sports; special occupational injuries, due to the need to work often turn the head and neck in a certain direction, or the need for head-bearing occupations such as acrobatics, can cause cervical spine and its surrounding ligaments, muscles, small joints to increase the load and cause cervical strain injury. People who need to work with their heads down for a long time, such as secretaries, typists, surgeons, instrument assemblers, electronic components and clock repairers, have a higher incidence of cervical spondylosis. Because long-term low head in addition to the back of the neck muscles, ligament tissue strain, in the flexed neck state, the internal pressure of the cervical disc is much higher than the normal position, and even more than double. If there is twisting, lateral flexion or increased load in this state, the local pressure will be higher, resulting in increased cervical degeneration. Watching television to maintain the head and neck in a certain position for a long time, especially over-extension or over-flexion position; frequent use of computers, fixed posture ambulation operation, over time, easily cause cervical spondylosis. In addition, traffic accidents, sports and even not lawful massage, traction and other traumatic injuries to the head and neck, can also cause or aggravate the degenerative changes of the cervical spine to varying degrees. To overcome such unfavorable factors: 1, to regularly change the head and neck position, that is, whenever your head and neck to a certain direction after turning too long, to another opposite direction, and repeat several times in a short period of time, which is conducive to neck health, but also to eliminate fatigue; 2, regular farsightedness, long time to look down at near things, both affect the cervical spine, but also easy to cause vision fatigue, and even lead to myopia. For this reason, whenever the ambulatory work for too long, should look up for a few minutes, to eliminate eye fatigue before working; 3, adjust the height and tilt of the workbench, such as the workbench is too high or too low will make the neck supination or flexion, both positions are not conducive to the internal and external balance of the cervical spine, in principle, to make the head, neck and chest to maintain the normal physiological curve shall prevail, especially for cervical spondylosis or long-term ambulatory workers, you can do a with The desk is 10 to 30 degrees angle of the inclined work board; fourth, to carry out interval exercise activities, not only to benefit the limbs and viscera, to regulate the cervical spine and the entire spine internal and external balance is also beneficial. Another example is that some people need to use helmets for a long time and do not wear the law, will also “accumulate strain into disease”, resulting in cervical spondylosis. In order to prevent the occurrence of cervical spondylosis, with a helmet must be formal: wear a helmet, put down the mask, tighten the belt, so that the helmet and the whole head firmly combined to reduce shaking. Loose helmet will not only increase the burden on the neck vertebrae and muscles, but also does not play a safe protective role. Posture to be correct, driving head to be upright, two shoulders relaxed, the body to maintain balance slightly forward, chin backward, the neck slightly straight can effectively reduce the pressure on the cervical spine. At the same time, the helmet should be taken off in time after parking, and some neck activities and massage should be done properly to eliminate fatigue. The above conditions can lead to spasm of cervical muscle strain and misalignment of cervical vertebrae, and the second cervical vertebrae has the greatest mobility and is most likely to be pulled by the spastic muscle and cause misalignment. It is usually migraine on the affected side, or ear-temporal pain, or posterior headache on the affected side, or anterior headache; or with distension and pain in the affected eye, blurred vision; or with dizziness and distension on the affected side, tinnitus and deafness, vertigo when turning the head and neck when getting up and lying down; or with motion sickness; or with insomnia and neurasthenia, etc. Cervical spine self-functional exercise: The first form: look up to the sky (point: head extremely backward, ten seconds of stretching) The second form: left flat view (point: limit the right side of the pulling neck muscle, 10s) The third form: right flat view (point: limit the left side of the pulling neck muscle, 10s) The fourth form: left on 45 ° elevation (point: limit the pulling neck muscle, 10s) The fifth form: right on 45 ° elevation (point: limit the pulling neck muscle, 10s) 10s) Sixth pose: around the shoulder joint movement (points: 36 circles each in front and behind)