Introduction: Subarachnoid hemorrhage is one of the cerebral strokes which are differentiated from other types by risk factors, lower age occurrence & kind of treatment. Researches have shown differences in incidence, age & sex of patients & mortality rate in different parts of the world .This study was aimed to evaluate the sex, age, season of admission, risk factors, clinical presentations & the rate of Subarachnoid hemorrhage patients who admitted at Farabi Hospital during 1992-2002.Materials & Methods: This retrospective- descriptive study was based on the available records of subarachnoid hemorrhage patients admitted at Farabi hospital between 1992-2002.Variables including patients` age, sex, season of admission, clinical presentation, blood levels of sugar & cholesterol, history of hypertension, smoking, diabetes mellitus & alcohol consumption were closely measured & analyzed.Results: Among 240 subarachnoid hemorrhage patients 62.5% were female & 37.5% were male. The highest rate was in age group of 50-59 & the lowest rate was 80-89. 46.7% had hypertension & 5.5% were diabetic. History of smoking presented in 15.5% of patients. The most common clinical presentation was headache.Conclusion: The results revealed that females were more susceptible to subarachnoid hemorrhage & the age of these patients are lower than the other kinds of strokes.Subarachnoid hemorrhage was more frequent in spring & winter. The most common risk factor was hypertension.