Dizziness and nausea after cervical spine acupuncture are mainly due to three reasons: 1, the acupuncture process of dizziness, due to the local pain stimulation of the skin as well as deep acupuncture points acid numbness, distension and pain lead to sympathetic nerve excitation, easy to appear dizziness, nausea. 2, due to the cervical spine is not in a state of relaxation in the process of acupuncture, long time later, easy to lead to the deeper muscle and ligament and other tissues appear excessive fatigue and the formation of strain injury, can lead to local inflammatory lesions stimulate the sympathetic nerve, easy to appear dizziness, nausea. Fatigue and the formation of strain injury, will lead to local inflammation foci stimulation of the sympathetic nerve, dizziness, nausea. 3, due to the cervical spine parts of the cold, such as in the process of acupuncture due to the need to expose the local skin to appear cold, easy to lead to the muscles and deep ligamentous tissues of the temperature drop lead to a decline in blood circulation, the muscle tissue becomes tense will produce more metabolism products, the decline in blood circulation will lead to the increase in the accumulation of metabolic products, thus stimulating the metabolic function and the accumulation of the metabolism products. The decrease in blood circulation will lead to an increase in the accumulation of metabolites, thus stimulating the sympathetic nerves and causing dizziness and nausea.