本文报告6年中住院明确诊断的尿路感染74例。其中3岁以下62例占84%。临床症状以发热为主,多数缺乏尿感局部症状。5例<6月婴儿伴有黄疸。74例中段尿培养以大肠杆菌为主占63.4%。经I.V.P.证实6例有单侧肾盂积水,1例肾发育不全。疗效不满意者尚需注意返流因素。复方新诺明对单纯性尿感疗效满意。32例经1～5年随访,均已恢复正常。 This article reports 74 cases of urinary tract infection with a definite diagnosis of hospitalization in 6 years. Among them, 62 cases under 3 years old accounted for 84%. Clinical symptoms of fever-based, most of the lack of local symptoms of urinary tract infection. 5 cases <6 months baby with jaundice. 74 cases of middle urinary culture with Escherichia coli accounted for 63.4%. Confirmed by the I.V.P. 6 cases of unilateral hydronephrosis, 1 case of renal hypoplasia. Not satisfied with the efficacy of those who need to pay attention to reflux. Cotrimoxazole simple satisfied with the efficacy of simple urinalysis. 32 cases after 1 to 5 years follow-up, have returned to normal.