顾分析51例下呼吸道不动杆菌感染患者的临床资料。46例患有基础疾病，院内感染45例。多数患者发病前有抗生素、激素、免疫抑制剂、放疗、化疗及机械通气治疗史。混合感染27例，主要伴随菌为假单胞菌属、真菌及肠杆菌科细菌。药物敏感试验结果显示，阿米卡里、氟喹诺酮类及哌拉西林均有较强的抗菌活性。5种第2、3代头孢菌素的耐药率为17．2％～44．4％，舒普深无耐药现象。 Analysis of 51 cases of lower respiratory tract infection in patients with Acinetobacter clinical data. Forty-six cases had underlying disease and nosocomial infection in 45 cases. Most patients before the onset of antibiotics, hormones, immunosuppressive agents, radiotherapy, chemotherapy and mechanical ventilation history. Mixed infection in 27 cases, mainly accompanied by bacteria Pseudomonas, fungi and Enterobacteriaceae bacteria. Drug sensitivity test results showed that amikacin, fluoroquinolones and piperacillin have strong antibacterial activity. The resistance rates of the 5 kinds of second and third generation cephalosporins were 17.2% ~ 44.4%. Shu Pu deep no drug resistance.