Symptoms after pituitary tumor surgery: 1. Headache. Headache is mainly caused by low cranial pressure headache due to excessive drainage of cerebrospinal fluid after pituitary tumor surgery by placing drainage tubes. It is possible that the headache is caused by the irritation of bloody cerebrospinal fluid. Also, headache caused by increased intracranial pressure due to cerebral edema and rebleeding cannot be excluded. 2. Fever. Fever is normal for 3 days after surgery and often manifests as absorption fever. 3. Uroemesis. The main manifestation is an increase in urine volume, usually more than 250ml/h for 1-2 hours, with urine specific gravity below 1.005. urosepsis is mainly due to damage to the pituitary stalk during surgery, which can be cured after active treatment. 4. seizures. For patients who develop epilepsy, they need to be treated with oral antiepileptic drugs routinely.5. Cerebrospinal fluid leakage, mainly caused by the dura mater being damaged during surgery.