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B族链球菌是引起流产、胎膜早破、宫内感染、产褥感染的重要致病菌，分娩过程中新生儿感染B族链球菌后可引起败血症、肺炎和脑膜炎，新生儿病死率高，近半数幸存患儿将出现听力丧失、脑积水或语言发育障碍等严重后遗症。我国妊娠期B族链球菌感染的筛查和处理仍处于探索阶段。该文对B族链球菌的生物学特性和检测方法进行概述，并对妊娠晚期B族链球菌感染的治疗及预防研究进展进行综述，以期提高临床医务工作者对B族链球菌感染的重视。“,”Group B Streptococcus is an important pathogen of miscarriages, premature rupture of membranes,intrauterine infection, puerperal infection, and important pathogens of neonatal septicemia, pneumonia and meningitis.The mortality of neonate with group B Streptococcus infection is very high ,and nearly half of the surviving children will have hearing loss,severe developmental sequelae of hydrocephalus or language barriers.The screening and treatment of group B Streptococcus infection in pregnancy in China is still at the exploratory stage.Here is to make a review of the biological characteristics,test methods, diagnosis,treatment and prevention progress of group B Streptococcus infection in pregnancy in recent years,so as to improve the attention in clinical.