Carotid artery stenosis is a major threat to human health and is a very scary cerebrovascular disease. It is important to know that the carotid artery is the main channel of blood supply to the human brain, and if it becomes stenosed, the consequences can be unimaginable. Therefore, when one suffers from carotid stenosis, patients must respond correctly and actively and effectively treat and control it. Generally speaking, mild carotid artery stenosis does not affect the patient’s blood flow very much, and the patient does not have obvious ischemic symptoms, so the patient only needs to take conservative medication to stabilize the plaque and control the growth of the plaque by insisting on taking medication to prevent the stenosis from becoming serious. Is moderate carotid stenosis serious and do I need surgery? Of course it is serious. When carotid artery stenosis develops to moderate or severe, the blood flow channels are severely blocked and the blood supply to the brain is insufficient, which can induce a series of serious problems, such as cerebral infarction. In this case, surgery needs to be considered when necessary for a good treatment effect. Carotid endarterectomy is currently an effective treatment for moderate to severe carotid stenosis, but carotid endarterectomy is still far from universal in China and may not be available in general hospitals in many places, making it difficult for patients with carotid stenosis to seek medical treatment around the world, and many may turn to large places like Beijing for treatment. Carotid artery endarterectomy, under the direct view of microscope, peels off and removes the diseased carotid atherosclerotic plaque, eliminates the source of emboli, restores the patency of the lumen, normalizes the blood supply, and greatly reduces the chance of cerebral infarction. Moreover, the operation is low-risk, and there are usually no serious adverse reactions after the operation, which brings hope to the majority of patients.