When we think of cerebrovascular disease, the first thing that comes to mind is stroke and cerebral infarction. Carotid artery stenosis, a cerebrovascular disease with a high incidence in recent years, can cause stroke and cerebral infarction, but also other adverse consequences, posing a serious threat to health. Why does carotid artery stenosis occur? The carotid artery plays an important role in the operation of various activities in the human body, mainly undertaking the mission of transporting blood from the human heart to the brain to ensure smooth blood flow. However, due to the formation of atherosclerotic plaque, the lumen of the carotid artery gradually narrows and blood flow slows, leading to carotid artery stenosis. Once carotid artery stenosis is formed, the consequences are very frightening, as blood flow is blocked and the brain is not supplied with enough blood, which can easily lead to various problems. Therefore, carotid stenosis should not be delayed, and it is crucial to receive timely treatment at a regular hospital. Regarding the surgical treatment of carotid artery stenosis, some local hospitals may adopt carotid stent intervention, which has been found to have some problems, such as the easy formation of cerebral thrombosis during surgery and the high chance of stenosis after surgery. With the continuous progress of medicine, new ideas, new techniques, and new technological achievements have come out hotly, and many difficult-to-treat diseases have been overcome. Among them is the technique for treating carotid stenosis, called carotid endarterectomy. This procedure, with the advantage of a microscope and a 6-8 cm incision in the neck, precisely finds the carotid artery, removes the lesion site, and restores the inner wall and internal diameter of the carotid artery to normal.