Brainstem hemorrhage is dangerous if accompanied by high fever. Brainstem hemorrhage itself is a severe disease, and patients often experience disturbances of consciousness, coma, and paralysis of limbs. The hemorrhage can damage the center that regulates body temperature, leading to central fever. After falling into a coma, patients may encounter problems with expectoration and swallowing, which can easily lead to aspiration pneumonia and hypostatic pneumonia. Infections can also cause high fever. Patients need to use diuretics to reduce intracranial pressure, but excessive dehydration can also lead to dehydration fever. High fever exacerbates the consumption of the patient's body, increasing the physical burden and potentially leading to multiple organ failure. It is necessary to control the fever as soon as possible, using both physical cooling methods and medication.