Both ischemic and hemorrhagic strokes are more serious cerebrovascular diseases, and the severity is related to the location and size of the brain tissue lesion. In most cases, hemorrhagic stroke is relatively more disabling and lethal. Ischemic stroke and hemorrhagic stroke, if occurring in important areas, such as the brainstem, can affect consciousness, respiration, and at any time, respiratory cardiac arrest and life-threatening. In the case of large lesions, they can lead to cerebral edema and brain herniation, which can be life-threatening at any time. The most common type of stroke is ischemic stroke, but hemorrhagic stroke has a higher rate of disability and death. Both ischemic and hemorrhagic strokes can be disabling and life-threatening, so it is important to seek prompt medical attention when acute cerebrovascular disease occurs.