The carotid artery is one of the main arteries of the body, and if there is a lesion in the carotid artery, it will pose a threat to the life and safety of the patient. Carotid artery is the main channel of blood transport to the brain, once the carotid artery stenosis of the brain blood supply will be affected, if the carotid artery atherosclerotic plaque caused by lumen narrowing, the occurrence of plaque off may cause a stroke. Carotid artery stenosis should be treated as soon as possible to avoid more damage, carotid artery stenosis treatment is based on the degree of carotid artery stenosis graded treatment, carotid artery is divided into mild stenosis, moderate stenosis, severe stenosis. If the patient is a mild carotid artery stenosis can take statin drugs can play a role in stabilizing carotid atherosclerotic plaque to avoid plaque shedding. If the patient has moderate stenosis (≥50% stenosis), he or she must be treated by carotid endarterectomy, which has a significant therapeutic effect and can restore blood supply to the brain after surgery. Carotid endarterectomy is the most effective treatment for carotid stenosis. It is a surgical procedure to remove or peel off the local atherosclerotic plaque that causes stenosis in the carotid lumen to avoid plaque detachment and embolism leading to ischemic stroke, expand the carotid lumen, and improve the blood supply to the brain. This procedure is a relatively safe procedure, and with the improvement of surgeons’ treatment level in recent years, the success rate of the procedure has been greatly improved.