目前，医院感染问题日益突出，由于其疾病本身和反复化疗，患者极易发生各种感染，影响治疗效果。本文对我院1991年2月至1997年1月间血液科住院的的171N血液系统恶性肿瘤的医院感染进行回顾分析，探讨医院感染的原因和防治措施。1材料和方法1．且病例来源171N均为我院血淮科6年 At present, the problem of nosocomial infections has become increasingly prominent. Because of its own disease and repeated chemotherapy, patients are susceptible to various infections and affect the treatment effect. In this paper, we retrospectively analyzed 171N hospitalized patients with hematological malignancies hospitalized in our department from February 1991 to January 1997 to discuss the causes and prevention measures of nosocomial infections. 1 Materials and methods 1. 171N were all from our hospital for 6 years