Cerebral hemorrhage is a non-traumatic hemorrhage that originates in the brain parenchyma. The disease is usually seen in middle-aged and elderly people with a history of hypertension, and most of them have a sudden onset of the disease in an active state such as mood swings. Patients often have severe headache, vomiting and coma, limbs are slow, breathing is deep with snoring, pulse is slow and strong, urinary and fecal incontinence, blood pressure is elevated, occasional convulsions, often accompanied by central hyperthermia. The pupils are unequal in size bilaterally, the response to light is dull or absent, and the meningeal stimulation sign is positive. Patients with upper gastrointestinal bleeding often have cardiac arrhythmia and cerebral edema, arteriosclerosis and retinal hemorrhage in the fundus of both eyes. The manifestations after death from cerebral hemorrhage mainly include bilateral pupil dilatation, respiratory arrest, cardiac arrest, absence of autonomic blood pressure, disappearance of physiological reflexes, and disappearance of pathological reflexes. Death from cerebral hemorrhage is mainly due to increased intracranial pressure after hemorrhage, which compresses the brainstem and causes central respiratory and circulatory failure.