Death of brain hemorrhage patients is divided into two categories: First, brain hemorrhage can cause immediate respiratory and cardiac arrest and death if it is located in the brainstem. Because the brainstem is the life center of the human body, the body’s breathing and circulation are regulated by it. If the brainstem bleeding is huge, the patient will immediately cause respiratory and cardiac arrest and die. Secondly, if the brain hemorrhage is located in other locations, such as basal ganglia and thalamus, the mechanism of death is mainly due to the large amount of hemorrhage, which will cause acute intracranial pressure increase, and the increase of intracranial pressure to a certain degree will cause brain herniation, and once the brain herniation occurs, it will cause the blood flow in the brain to decrease, and eventually will cause the cerebral blood flow to be completely zero. At this moment, there is no blood supply to the cells in the brain, which will dramatically compress the surrounding brain tissue and brainstem, thus causing respiratory and cardiac arrest.