Although there are now many treatments for pituitary tumors, surgery is still the mainstay. Surgical treatment does remove as much of the tumor as possible, but it also carries a number of complications, and a significant number of patients report discomfort after surgery, commonly headaches and fever, and in some cases significant polyuria. What are these conditions? What postoperative complications do they suffer from? Hypopituitarism Presenting with fever, general weakness, headache, nausea, vomiting, and lack of desire to eat and drink. Blood cortisol and thyroid hormone are checked, and after the diagnosis is clear, treatment with prednisone and thyroxine is administered under medical supervision. Hyponatremia Usually occurs on the 4th to 8th postoperative day and manifests as hypothermia, weakness, headache, nausea, vomiting, and in severe cases, deterioration of mental status. Low blood and chloride values on laboratory tests. After the diagnosis is clear, the infusion is supplemented with hypertonic saline and water intake is restricted. Uroemesis gravidarum manifests as excessive drinking and urination. More than 4000 ml a day. Mostly starts 3 days postoperatively, no dehydration and diuretics are given in principle postoperatively. Postoperative urine volume <200ml >250ml/h can be used with posterior pituitary glandular or mydriatic subcutaneous injection. Nasal congestion Most often occurs after the removal of the nasal stuffing gauze after surgery, individually after several days, and can be seen in mild cases with temporary filling of the nasal cavity with cotton balls. In severe cases (bleeding of several hundred milliliters), angiography is required. Internal carotid artery injury can cause pseudoaneurysm, internal carotid artery-cavernous sinus fistula, postoperative large vessel spasm, occlusion, and cerebral nerve injury (0.4% to 1.9%), especially exhibition nerve injury is common. When these complications occur, patients and their families should not panic, but should actively inform the medical staff, and they can be relieved with active treatment.