The carotid artery is a large blood vessel in the human body, which plays an important role in connecting the heart and the head and face, supplying fresh blood and nutrients to the brain and the head and face. However, in reality, the carotid artery is often prone to problems, especially many middle-aged and elderly people, prone to carotid artery stenosis, which is a very dangerous disease. According to statistics, more than 60% of clinical ischemic strokes are caused by carotid stenosis, and severe strokes can be disabling or even fatal. Therefore, it is important to pay attention to the prevention and treatment of carotid artery stenosis. Carotid artery stenosis is mainly caused by atherosclerosis, specifically related to many factors such as life and diet. So is there a relationship between carotid stenosis and smoking? The answer is yes, carotid artery stenosis and smoking are closely related, smoking is one of the high-risk factors of carotid artery stenosis. Due to the aging of the blood vessels, the lipid impurities in the blood become more, the blood becomes thick, and gradually atherosclerosis, coupled with some people smoking, drinking, hypertension, hyperlipidemia, hyperglycemia, etc., these factors will aggravate or promote atherosclerosis, long-term blood lipid deposits attached to the inner wall of the blood vessels, so that the carotid artery intima gradually proliferates and degenerates, forming plaques, blocking the carotid lumen, resulting in stenosis. Therefore, to prevent carotid artery stenosis, it is necessary to quit smoking and limit alcohol, maintain good dietary habits, and control blood pressure, blood sugar and blood lipids. If you already have the disease, you should treat it in time. Mild cases can be treated conservatively by internal medicine and reviewed regularly. For more serious carotid stenosis, carotid endarterectomy can be performed, which has good clinical results and is recognized and praised by patients and their families.