目的探讨老年糖尿病患者合并肺部感染的原因和治疗要点,为糖尿病合并肺部感染的治疗提供依据。方法对本科收治的56例老年糖尿病合并肺部感染患者及137例单纯老年肺部感染患者作回顾性研究。结果老年糖尿病患者机体免疫力低下,肺部感染率明显升高。G-杆菌是主要的致病菌。患者血糖的良好控制有利于肺部感染的控制。结论积极控制血糖,有效安全抗菌素的应用是老年糖尿病合并肺部感染的有效治疗措施。 Objective To investigate the causes and treatment points of elderly patients with diabetes mellitus complicated with pulmonary infection and provide basis for the treatment of diabetes complicated with pulmonary infection. Methods A retrospective study was conducted on 56 elderly patients with diabetes mellitus and 137 elderly patients with pulmonary infection admitted to our hospital. Results Elderly patients with diabetes low immunity, lung infection was significantly higher. G-bacteria is the main pathogen. Good control of blood glucose in patients is conducive to the control of pulmonary infection. Conclusion The active control of blood glucose, effective and safe use of antibiotics is an effective treatment for elderly patients with diabetes mellitus and pulmonary infection.