The severity of cerebrovascular blockage is related to the blocked blood vessel. For cerebrovascular, it is mainly divided into anterior circulation and posterior circulation system, and the anterior circulation is dominated by the middle cerebral artery. If the middle cerebral artery is blocked, the patient can have a large infarction in one hemisphere, and the condition is relatively serious. If the middle cerebral artery is blocked, the patient may have a large infarction in one hemisphere, and the condition is relatively serious. For the posterior circulation vessels, mainly the basilar artery and the posterior cerebral artery, if the main vessel is blocked, such as the tip of the basilar artery, a series of clinical symptoms appear, and the patient is relatively dangerous, and the patient’s life may be in danger in severe cases. If the lesion occurs in the perforating vessels, such as the posterior inferior cerebellar artery, the patient’s infarct area is relatively small, and the clinical prognosis is relatively lighter.