The carotid artery is a very important artery that connects the heart to the head and face, and is one of the main blood vessels supplying the brain. The carotid arteries are prone to lesions, such as carotid artery stenosis, which is a very common disease, especially in the middle-aged and elderly people with a high incidence. Carotid artery stenosis is mostly due to atherosclerosis, blood lipid deposition, attached to the inner wall of the blood vessels, resulting in carotid artery intima-media proliferation and thickening, over time, so that the formation of plaque, resulting in carotid artery vascular blockage. Then carotid artery blood vessel blockage, the body will appear what obvious symptoms? Carotid artery blood vessel blockage, will inevitably cause poor blood flow, the formation of a series of ischemic symptoms. Specific manifestations may include, for example, tinnitus, dizziness, blackouts, blurred vision, dizziness, headache, insomnia, memory loss, drowsiness, excessive dreaming, limb weakness and other symptoms. In the case of external carotid artery stenosis, it may lead to ocular ischemia, manifested by vision loss, hemianopsia, diplopia, etc.. It may also lead to TIA, acute cerebral infarction, etc., and severe cerebral infarction may cause disability or even death. Therefore, patients with carotid artery stenosis must receive treatment as soon as possible. For carotid artery stenosis, mild carotid artery stenosis can be treated conservatively by internal medicine, strict medication, and regular complexity; while more serious carotid artery stenosis needs to be treated by surgery as soon as possible. At present, the more effective surgical treatment for more severe carotid artery stenosis is carotid endarterectomy, which is also recognized by the international medical community as a standard surgical procedure, which can completely remove the carotid atherosclerotic plaque, rebuild the normal lumen and blood flow, eliminating the risk factors that trigger cerebral infarction.