铜绿假单胞菌为重要的条件致病菌，普通条件下不致病。但随着人群老龄化、抗生素广泛使用、器官移植、免疫抑制［１］、化疗等因素的存在，铜绿假单胞菌在感染中的作用越发重要，可引起呼吸病房、烧伤病房、ＩＣＵ等病区感染的爆发流行［２］。由于该菌耐药性广、感染者机体抵 Pseudomonas aeruginosa is an important pathogenic bacteria, under normal conditions is not pathogenic. However, with the aging population, widespread use of antibiotics, organ transplantation, immunosuppression [1], chemotherapy and other factors, the role of Pseudomonas aeruginosa in infection becomes more and more important and can lead to respiratory wards, burn wards, ICU and other diseases The outbreak of regional infection epidemic [2]. Due to the bacterial resistance of the bacteria, the infected person arrived