The number of days it takes for a brain hemorrhage to pass the danger period cannot be generalized, but depends on the location and the amount of the brain hemorrhage. In the case of massive brain hemorrhage, the patient’s life may be in danger at any time, while in the case of small or moderate brain hemorrhage, the danger period is 1-2 weeks. Cerebral hemorrhage is a common and frequent disease in neurology. The common cause is hypertension combined with small arteriosclerosis, and other causes include cerebrovascular malformation, aneurysm, amyloid angiopathy, and blood disorders. Cerebral hemorrhage mostly develops suddenly when the patient is excited or active, and the condition often reaches its peak in minutes to hours after the onset. In general, if the patient has a small amount of bleeding and mild symptoms, the risk period is short and usually does not exceed 2 weeks after effective treatment. However, if the patient has more bleeding, the more severe the patient’s symptoms will be, and in severe cases, coma and even sudden death may occur. Therefore, the length of the danger period for patients with cerebral hemorrhage varies from person to person and from disease to disease. It should be noted that cerebral edema, increased intracranial pressure and brain herniation formation are the main causes of death in patients with cerebral hemorrhage, and the treatment should focus on controlling bleeding and reducing intracranial pressure during the acute phase of the patient.