目的　对 6 0例老年革兰氏阴性杆菌肺炎的诊断、治疗、预防进行了总结探讨。方法　收集本院 1990年1月至 2 0 0 0年 4月该种病例 6 0例进行总结分析。结果　 6 0例中 ,起病缓慢者 47例 ,起病急骤者 13例 ,病情恶化自动出院者 4例 ,死亡者 5例。结论　老年革兰氏阴性杆菌肺炎一般入院时肺炎临床表现不典型 ,病情危重 ,易被误诊 ,由于其预后差 ,早期诊断、治疗应引起重视。 Objective To summarize the diagnosis, treatment and prevention of 60 elderly Gram-negative bacilli pneumonia. Methods A total of 60 cases of this type in our hospital from January 1990 to April 2000 were collected and analyzed. Results Of the 60 cases, 47 cases had a slow onset, 13 cases had a sharp onset, 4 cases were discharged automatically and 5 died. Conclusion The clinical manifestations of pneumonia in elderly patients with Gram-negative bacilli are generally not typical at the time of hospital admission. The patients are critically ill and easily misdiagnosed. Due to their poor prognosis, early diagnosis and treatment should be emphasized.