Brainstem hemorrhage is one of the most dangerous types of cerebral hemorrhage. Many patients with extensive brainstem hemorrhages quickly fall into a coma because the brainstem is the central hub of human life. It sends fibers that control the heart and breathing, hence, a brainstem hemorrhage affects both heartbeat and respiration. Patients with significant brainstem hemorrhage generally end in death, and surgery does not effectively relieve the hemorrhage. Furthermore, the risks of surgery are very high, and currently, surgery is not recommended. Once a patient with brainstem hemorrhage falls into a coma, their vital signs become unstable, presenting a grave danger. There are no particularly effective emergency measures; treatment is mostly symptomatic, such as the use of ventilators for respiratory difficulties. In cases of infection, treatment predominantly involves the administration of antibiotics to control the infection. Additionally, treatments may include brain protection measures, dehydration to reduce intracranial pressure, and protection of the gastric mucosa. Overall, the outlook after a coma due to brainstem hemorrhage is very poor, with no particularly effective treatment methods available.