A bad cervical spine does not lead to carotid artery stenosis, which is mainly caused by carotid atherosclerosis. When atherosclerosis forms plaques, the lumen of the blood vessel will become narrow, manifested as carotid artery stenosis. Atherosclerosis patients, mostly have bad dietary habits, such as addicted to food, alcohol, smoking, do not like sports. Patients can be accompanied by hypertension, diabetes mellitus, hyperlipidemia and other diseases, in which the blood lipid profile should be closely monitored in particular. Elevated blood lipids and poor lifestyle and dietary habits have a great deal to do with each other. When the blood fat is elevated, the fat in the blood will be deposited on the wall of the carotid artery, and the fat deposition will gradually form arterial plaque, and the gradual increase of arterial plaque will lead to carotid artery stenosis. The bad carotid spine will only compress the vertebral artery, so there is a fundamental difference between the two. This also reminds us to have good living habits and dietary habits in our daily life.