Old fever after head surgery is usually related to postoperative infections, such as intracranial infections and lung infections, which can be treated with general treatment, medication and adjuvant treatment according to the cause of the disease. 1. Intracranial infections: for bacterial intracranial infections, vancomycin and ceftazidime can be used; for fungal intracranial infections, fluconazole can be taken orally. For viral intracranial infections, acyclovir and ganciclovir should be used as prescribed by the doctor. If the temperature exceeds 38.5 degrees, oral ibuprofen suspension can be taken. 2. Lung infection: after head surgery, it is easy to cause decreased resistance and lung infection, causing cough and fever. For bacterial pneumonia caused by postoperative, cefixime and azithromycin can be taken orally as prescribed by the doctor. If the fever has been high, the temperature is more than 38.5 degrees, then oral ibuprofen, acetaminophen. Head surgery is always fever, it is recommended to consult a doctor in time, through the routine blood test to understand whether there is an infection of pathogenic bacteria, and then reasonable cooling.