The causes of fever after cerebral hemorrhage are as follows: First, lung infection, after cerebral hemorrhage, patients often have consciousness disorder, coma, unable to cough, cough sputum on their own, sputum will accumulate in the lungs, resulting in lung infection; some patients undergo tracheotomy, the outside world bacteria through the tracheotomy tube into the lungs, resulting in lung infection, fever, sputum, etc.; Second, intracranial infection, cerebral hemorrhage, if the amount of hemorrhage is large, requiring craniotomy Second, intracranial infection, brain hemorrhage, if the hemorrhage is large and requires craniotomy, bacteria will invade into the skull during and after the operation, which may cause intracranial infection and lead to fever, even hyperthermia; third, central fever, brain hemorrhage, if the hemorrhage affects the hypothalamus and other temperature centers, which may result in central hyperthermia, and this kind of fever often has a temperature as high as 40 degrees, and the efficacy of antipyretic medicines is relatively poor. For pulmonary and intracranial infections, anti-infective treatment can be strengthened; for centralized hyperthermia, strong physical cooling means such as ice blankets and ice caps are often needed.