Severe cerebrovascular stenosis needs to be treated by medication and surgery. 1. Drug therapy: patients should take aspirin, clopidogrel and other anti-platelet drugs as prescribed by the doctor. If the patient has high blood pressure, he/she should also take statin drugs such as pravastatin, simvastatin, atorvastatin, etc. 2. Surgery: If medication fails to relieve symptoms and stabilize the condition, patients with severe cerebrovascular stenosis or symptoms need to consider surgical treatments such as endarterectomy, carotid endarterectomy, or endovascular treatments such as balloon angioplasty and self-expanding stent implantation. In addition, patients with severe cerebrovascular stenosis need to control their diet, quit smoking and limit alcohol, maintain good living habits, and exercise appropriately. To summarize, patients with severe cerebrovascular stenosis need to go to the hospital in time, cooperate with the doctor for active treatment, and strengthen the management of daily life, so as to avoid delaying the condition.