Fever of 37.5 degree Celsius ten days after pituitary tumor surgery may be related to postoperative absorption fever, intracranial infection, lung infection, etc., which can be treated with medication or physical cooling as prescribed by doctor. 1. Postoperative absorption fever: some pituitary tumors with fever of 37.5 degrees Celsius ten days after surgery, the body temperature can return to normal in about three days, no need to worry too much. 2. Intracranial infection: those with clear bacterial infection need to follow the doctor’s instructions to use ceftriaxone sodium and other antibiotic treatment, those with fungal infection can be treated with fluconazole, 5-fluorocytosine and so on, and those with viral infection can be treated with acyclovir, ganciclovir and other drugs. When the intracranial pressure increases, the use of mannitol, furosemide and other dehydrating drugs should be prescribed by the doctor. If there is a clear brain abscess, it is feasible to use puncture and abscess extraction, craniotomy and so on. 3. Lung infections: bacterial infections can be treated with antibiotics such as penicillin and cefixime, and viral infections can be treated with antiviral drugs such as oseltamivir and ganciclovir. In addition to the above treatments, non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen and acetaminophen, can be prescribed to lower the temperature of febrile patients. Physical means can also be used to assist in lowering the temperature, such as placing ice packs on the head, warm water baths, and alcohol baths. It is recommended that people with a fever of 37.5 degrees Celsius ten days after pituitary tumor surgery should consult a doctor in time, under the guidance of the doctor’s active treatment, and avoid abusing medicines on their own.