From 1974 to 1994, anti-reflux ureterocysto-reimplantation was performed on 51 children (1 boy, 50 Girls) aged from 10 months to 13 years. The follow-up duration of 45 cases was 3 months to 14 years. The clinical symptoms of frequency of urination, lumbago and repeatedly fever, etc, were not observed except urinary incontinence in 2 cases. The results showed that ureterocysto-reimplantation is simple and traumatic. Some important aspects such as preoperative location and intraoperative identification of the unilateral or bilateral ectopic ureters were analyzed.