There are some complications after brainstem hemorrhage surgery, and the risk period for these complications is not quite the same. First of all, the most dangerous stage of bleeding is on the day of brainstem hemorrhage surgery and within 24-48 hours after surgery, after 2-3 days after surgery, the probability of bleeding is very small and the patient has to enter the dangerous period of brainstem edema. The risk period of brainstem edema lasts about 1-2 weeks, and after 2 weeks, the brainstem edema will slowly subside, and the main risk at this time is intracranial infection and brainstem failure, which is about 1-3 months. During this period, because patients with brainstem hemorrhage are bedridden for a long time, complications such as pulmonary infections, urinary tract infections, malnutrition, and decubitus ulcers may occur. According to clinical experience, after these complications appear, the longest time for treatment to stabilize may be 5-6 months, which means that some patients are in a stable state for 1-3 months and can go for post-rehabilitation treatment, but some patients need 5-6 months to pass the risk period of all complications and go for post-rehabilitation treatment.