The general danger period for cerebral hemorrhage is within two weeks after the onset of the disease, and after the cerebral edema subsides in about two weeks, the patient’s condition is generally stable. During the dangerous period after cerebral hemorrhage, the main purpose is to prevent rebleeding and excessive cerebral edema. Rebleeding usually occurs within 48 hours after the first bleeding, and can be prevented by stopping bleeding and controlling blood pressure after the onset of the bleeding. Cerebral edema after cerebral hemorrhage is one of the causes of aggravation of the condition. Generally, cerebral edema starts to occur within a short period of time after cerebral hemorrhage, and usually reaches its peak in about one week, and then subsides in about two weeks. Therefore, starting from the onset of cerebral hemorrhage, it is necessary to start active dehydration treatment to prevent excessive cerebral edema from leading to cerebral herniation. After the edema subsides after two weeks, the patient’s condition is generally stable. However, the specific situation varies from person to person, and the patient can consult a medical professional for advice.