Clinically, the danger period of cerebral hemorrhage drainage is usually about one week, there are individual differences, some people even need 2~3 weeks. Cerebral hemorrhage drainage is a kind of emergency surgery taken clinically to cope with severe cerebral hemorrhage patients such as bleeding volume greater than 30 ml and serious brain tissue compression symptoms such as coma and unstable vital signs. The purpose is to reduce the intracranial pressure as soon as possible to prevent the formation of cerebral hernia and death. After cerebral hemorrhage drainage surgery, patients usually have persistent cerebral hemorrhage for 24 to 72 hours, when the condition can deteriorate dramatically and become life-threatening. After that, the patient will experience a period of cerebral edema, depending on the severity of cerebral hemorrhage, the duration of cerebral edema is different, usually at least a week or so, at this time the condition is not optimistic. Therefore, we should not take it lightly after cerebral hemorrhage drainage surgery, and should closely observe the patient’s vital signs and take resuscitation measures at any time.