1985年1月～1993年1月,我科收治小儿原发性肾病综合征(NS)140例,其中合并院内感染者66例,占47.1%。现对其作回顾性分析。1　诊断标准1.1　原发病例诊断和分型按第二次全国小儿肾病会议的建议为标准诊断[1]。1.2　入院时未发生感染,或不处于潜伏期而在入院48h后发生感染者,称为 From January 1985 to January 1993, 140 cases of pediatric primary nephrotic syndrome (NS) were treated in our department, of which 66 cases were complicated with nosocomial infection (47.1%). Now for its retrospective analysis. A diagnostic criteria 1.1 The diagnosis and classification of primary cases according to the recommendations of the Second National Kidney Disease Conference for the standard diagnosis [1]. 1.2 admitted to the hospital without infection, or not in the incubation period and 48h after admission occurred in patients infected, known as