Cerebrovascular stenosis, known as cerebrovascular stenosis occlusive disease, is a group of diseases caused by cerebrovascular stenosis or occlusion of cerebral blood supply deficiency, resulting in ischemia and infarction of the corresponding brain tissue leading to neurological symptoms. Once cerebral infarction occurs, most of the current internal and external treatments cannot reverse the disease, but can only alleviate further deterioration. For severe stenosis or even occlusive changes of large vessels such as the internal carotid artery, surgical treatment is required at this time, and the commonly used surgical methods include carotid endarterectomy, intracranial and extracranial revascularization, vasodilation and angioplasty, and endovascular stenting. Moreover, for acute carotid artery obstruction, if angiography shows that the blood flow of collateral circulation can reach the internal carotid artery of the rocky bone segment, emergency surgery should be performed. Secondly, if the degree of surgery is not reached, the relevant medications need to be actively applied for treatment. For example, if it is clear that there is no bleeding disease, oral antiplatelet aggregation drugs such as aspirin or clopidogrel and lipid-lowering drugs can be used for treatment. In addition, it is important to change the previous lifestyle, try to control blood pressure, stabilize blood sugar, quit smoking and alcohol, do not eat fatty foods, and lower blood lipids. Strive to minimize the degree of vascular damage. The diseases caused by cerebrovascular stenosis are very numerous, and its causes are relatively complex. It is important to carry out relevant control as well as treatment in a timely manner so as to achieve a good clinical prognosis.