摘要：随着现代医学技术的发展，医疗活动中侵入性操作越来越多，如动静脉插管、泌尿系导管、气管插管、吸入装置、监控仪器探头等，给病人的临床诊治带来了便利。然而，侵入性操作在诊治疾病的同时，把外界的微生物带入体内，同时损伤了机体的防御屏障，使病原体容易侵入机体，不可避免地造成医院感染，对患者和医护工作人员的身体健康造成影响。因此医院感染中病原微生物的临床检验对病原菌的诊断监测以及抗菌药物的使用具有重要的意义，临床细菌检验对预防治疗医院感染十分必要

As the development of modern medical techniques, more and more invasive operation such as vein and venous cannula, urinary catheter, trachea cannula, suction device, probes of monitoring instrument bring more conveniences in diagnosis and treatment for patients. Bacteria were dragged in vivo from outside at the moment of invasive operation, and the defensive barrier was destroyed at the same time. All of the operation could increase the rate of hospital infections, and threatened the health of patients and medical staffs. It’s very important for the clinical test of bacteria to identify the pathogenic microorganisms on patients with hospital infections.