The importance of the carotid artery should be very clear to people, the human brain’s blood is mainly through the carotid artery to transport, imagine if the carotid artery channel becomes narrowed, that can not be for the brain normal blood supply, the cranium of the various activities of life may not be able to run normally, which is a great impact on the whole organism. From the current point of view, the incidence of carotid artery stenosis is still quite high, not only many middle-aged and elderly people get sick, but also some young people because of irregular living habits and dietary habits, and as a result, also get carotid artery stenosis. Carotid artery stenosis is not a small problem, the disease should be actively treated, so as to avoid stenosis aggravation caused by their own greater harm. Clinically, carotid artery stenosis can be mild or severe, usually the stenosis area is within 50% of the mild carotid artery stenosis, if the stenosis area is more than 70% of the carotid artery stenosis, then it belongs to the severe carotid artery stenosis. How to treat severe carotid artery stenosis conservatively? It should be noted that mild carotid artery stenosis can be treated conservatively with medication to prevent the stenosis from worsening, but if it has developed into severe carotid artery stenosis, it is not recommended to treat it conservatively, and it is necessary to carry out surgery in a timely manner. Because this time the stenosis is very serious, the patient will not only appear obvious ischemic symptoms, without timely treatment to control the possibility of cerebral infarction.