The carotid arteries are located on the left and right sides of the neck and are an important vascular channel supplying blood to the brain and face, which shows the importance of the health of the carotid area. However, there are always some carotid artery diseases that endanger people’s health, carotid stenosis is more frequent, once the problem of carotid stenosis, it will directly affect the blood supply, if not timely treatment, let it develop, the consequences are more serious. Carotid artery stenosis is one of the top killers threatening human health, and there are strict grades according to the degree of stenosis, and different treatment measures for different grades of carotid artery stenosis: Generally speaking, carotid artery stenosis between 0-50% belongs to mild carotid artery stenosis, at this time the condition does not have a great impact on blood flow supply, and patients may have no symptoms. However, it should be taken seriously and treated with anticoagulant drugs; if the carotid stenosis reaches 50%-70%, it is a moderate carotid stenosis; if the carotid stenosis exceeds 70%, it is a severe carotid stenosis. The problem of moderate to severe carotid stenosis is more serious because the official cavity of the carotid artery becomes thinner and the blood flow is greatly reduced, so the patient should undergo surgical treatment if necessary. Because moderate to severe carotid artery stenosis may not be achieved with medication, surgery can better control the condition and help restore blood flow channels. Carotid endarterectomy is the most reliable treatment for moderate to severe carotid stenosis. Carotid endarterectomy is performed under a microscope, which ensures the safety of the procedure. The incision is small and the operation time is short, which can effectively remove the diseased carotid artery intima, thus restoring the smoothness and integrity of the inner wall of the carotid artery, and the inner diameter can be restored to normal size.