The risk period for craniotomy for cerebral hemorrhage is usually within two weeks, because within two weeks, the greatest risk after surgery for cerebral hemorrhage will face two phases: rebleeding and cerebral edema. Bleeding usually occurs within 72 hours of surgery, and cerebral edema usually begins to occur about 3-5 days after surgery and begins to subside within a week or so, and in some cases may last up to two weeks or so. Whether it is cerebral hemorrhage or cerebral edema, the main consequence is that it will cause the intracranial pressure to rise again, and the consequence of the rise in intracranial pressure will further aggravate the patient’s condition. Therefore, within two weeks of the craniotomy, the patient’s general vital signs, especially consciousness, pupil, blood pressure, etc., must be closely observed, and a dynamic review of the head CT is also needed to assess the intracranial situation.