嗜麦芽寡养单胞菌(stenotrophomonas maltophilia,SMA)是革兰阴性非发酵杆菌,广泛分布于自然界和医院环境,也可寄居于人的呼吸道和肠道,是条件致病菌,是一种主要引起医院感染的病原菌,具有高度的耐药性,给感染的治疗和医院感染的控制带来了极大的困难。笔者主要针对SMA的病原学 Stenotrophomonas maltophilia (SMA) is a gram-negative non-fermentative bacillus, widely distributed in nature and the hospital environment, but also can be residing in the human respiratory and intestinal tract, is a pathogenic bacteria, is a major Pathogenic bacteria that cause nosocomial infections have a high degree of resistance, posing great difficulties for the treatment of infections and the control of nosocomial infections. The author focuses on the etiology of SMA