Five cases of pituitary apoplexy were reported and the literature was reviewed in clinical aspects. Our diagnosis criteria consisted of 1. sudden onset of maked visual impairment, bitemporal hemianopsia ,severe headache, yore-Ring, etc; 2. with or without a history of pituitary adenoma, but radiological examinations suggest evidences of pituitary apoplexy; 3. exeluding cases with asymptomatic hemorrhage verified at operation. CT scan, treatment with corticosteroids and craniotomy or transsphenoidal decompression will lead a successful outcome in most cases of pituitary apoplexy. One case in this series died of herniation, the prognosis of other four patients was satisfactory.