Cerebral bruising is usually caused by cerebral hemorrhage, which has a high mortality rate. It refers to non-traumatic intracerebral parenchymal hemorrhage, such as hypertensive cerebral hemorrhage, cerebral hemorrhage due to coagulation dysfunction, cerebral amyloid angiopathy, etc. Whether a patient with cerebral hemorrhage will die or not is closely related to the bleeding site and the bleeding volume, which needs specific analysis. 1, if the bleeding in the cerebral hemisphere is less than 30ml, and the bleeding site is not a critical site, the hemorrhage can be treated in time, and the hemorrhage can be gradually absorbed, and the patient can basically recover after 3-4 weeks of treatment. 2, if the bleeding volume in the cerebral hemisphere is more than 30ml, or the bleeding volume in the cerebellum is more than 15ml, it is easy to form brain herniation, which will compress important brain tissues and can lead to death without timely treatment; 3. If the bleeding site is brain stem and the bleeding volume is more than 10ml, even after timely treatment and therapy, the patient may die soon. Cerebral hemorrhage is one of the common diseases in acute cerebrovascular disease, which needs to be sent to hospital immediately for rescue and cannot be self-help at home. The condition is usually controlled by intravenous administration of drugs and, if necessary, cranial aspiration of the hematoma to reduce intracranial pressure. For patients with mild cerebral hemorrhage, the prognosis is good with prompt treatment, but care should be taken to prevent recurrence. Patients with rebleeding and severe cerebral hemorrhage have a poor prognosis and may die within days or hours of onset due to brain herniation. It is important to note that patients with cerebral hemorrhage often have a history of hypertension, cerebral hemangioma, and arteriovenous malformation of the brain. When headache symptoms appear, you should go to the hospital for relevant examinations in time to control the progress of the disease. Usually, it is important to keep a relaxed and happy mood and avoid anger, which may trigger or aggravate the disease and lead to recurrence of cerebral hemorrhage in severe cases.