Occlusion of the right and left common carotid arteries can cause a serious lack of blood supply to the brain, and can be treated by carotid artery endarterectomy and interventional therapy. 1. Occlusion of the right and left common carotid arteries can be treated by carotid endarterectomy. It removes the hardened plaque blocking the carotid arteries and restores blood circulation to the brain. 2. Right and left common carotid artery occlusion can also be treated by interventional therapy, implanting stents into the blocked part to maintain the continuity of the blood vessels, improve blood circulation, and avoid large cerebral infarction, and meanwhile, medicines to prevent the re-stenosis or occlusion of blood vessels, such as aspirin and clopidogrel, etc., should be used under the guidance of the doctor after the treatment. Patients after right and left common carotid artery occlusion should control their blood pressure, quit smoking and drinking, eat a light diet, eat less greasy food, make sure their mood is happy, and have regular rechecks.