Carotid artery stenosis is now a relatively common condition, especially in middle-aged and elderly people. Carotid stenosis can be very dangerous because the carotid artery is the main artery that connects the heart to the brain and is one of the main blood vessels that supply blood to the brain and head and face. Therefore, if the carotid artery is narrowed, it may cause cerebral ischemia or even cerebral infarction. According to clinical statistics, more than 60% of cerebral infarction is caused by carotid stenosis, and severe cerebral infarction can be disabling or even fatal. Therefore, once suffering from carotid artery stenosis, it must be treated promptly. For the treatment of carotid artery stenosis, generally if the stenosis is mild, then it is recommended to treat it conservatively with internal medicine; while if it is more serious, then it needs to be treated by surgery according to the specific situation. Some patients ask what should be done if carotid stenosis recurs after taking medication and then stenoses 8%. In the case of mild carotid stenosis, it is necessary to take the medication strictly and on time, and also pay close attention to maintaining a good diet and good lifestyle, eating more vegetables and fruits, eating less greasy meat and fishy food, keeping a happy mood, exercising properly, controlling weight, controlling blood pressure, blood lipids and blood sugar levels, and reviewing regularly. If carotid artery stenosis really occurs and recurs with medication, then it is necessary to consider taking carotid endarterectomy treatment at the right time according to the stenosis rate, symptoms, signs and other factors. Carotid endarterectomy has become an internationally and nationally recognized standard procedure for the treatment of moderate to severe carotid stenosis to prevent cerebral infarction, which can completely remove the thickened carotid intima and atherosclerotic plaque and reestablish a smooth blood flow with remarkable results.