目的　探讨老年人蛛网膜下腔出血 (SAH)的临床及CT特点。方法　对 5 0例 (>6 0岁 )资料完整的老年人蛛网膜下腔出血病人的临床资料进行分析。结果　有明确发病诱因者 4 0例 (80 % ) ,无明显发病诱因 10例 (2 0 % )。有高血压脑动脉硬化病史 35例 (70 % ) ,有脑梗死病史 1例 (2 % )。有颅内动脉瘤 6例(12 % )。结论　老年人蛛网膜下腔出血病人临床症状和体征往往不明显 ,易造成误诊。 Objective To investigate the clinical features and CT features of subarachnoid hemorrhage (SAH) in the elderly. Methods The clinical data of 50 elderly patients with subarachnoid hemorrhage (> 60 years old) with complete data were analyzed. The results showed that there were 40 cases (80%) of the specific inducement of pathogenesis and 10 cases (20%) of the non-obvious inducement of the disease. Hypertensive cerebral arteriosclerosis in the history of 35 cases (70%), a history of cerebral infarction in 1 case (2%). There are 6 cases of intracranial aneurysms (12%). Conclusion The clinical symptoms and signs of elderly patients with subarachnoid hemorrhage are often not obvious, easily lead to misdiagnosis.