People are so weak and small in front of diseases, no one wants to live with diseases, but some diseases still come to the door. Carotid artery stenosis is one of the more common cerebrovascular diseases nowadays. Once the human carotid artery is stenosed, the blood supply to the brain becomes abnormal, and if it is not controlled by timely treatment, more serious problems will be induced, and even life-threatening. Treatment of carotid artery stenosis is the first priority. The clinical treatment of carotid stenosis is mainly based on the size of the stenosis rate and the patient’s specific symptoms and performance to evaluate and then give different treatment plans. If the stenosis rate reaches 70 percent or more, it is considered moderate to severe carotid stenosis, and treatment at this time requires surgery. Once they hear about surgery, many patients are worried about the risk of surgery, and some patients even hesitate to make a decision, resulting in delaying their condition, which is highly undesirable. At present, the treatment of moderate to severe carotid stenosis is more effective is carotid endarterectomy, how many levels of surgery does carotid endarterectomy belong to? Carotid endarterectomy is a difficult tertiary surgical procedure, but there is no need to worry, although it has not been widely carried out in China, this technology has been carried out abroad for decades, and the technology is quite mature, and the postoperative recovery is ideal.