目的　探讨内镜治疗小儿输尿管口囊肿的方法及技术。方法　总结 7例小儿输尿管口囊肿的临床资料 ,报告经下腹壁膀胱造瘘口内镜治疗小儿输尿管口囊肿的手术方法。结果　 7例输尿管口囊肿手术顺利 ,术中出血少 ,操作简便 ,恢复快 ,术后随访 6月至 3年 ,临床症状消失 ,无积水及返流 ,肾功好。结论　经下腹壁膀胱造瘘口内镜治疗小儿输尿管口囊肿 ,是一种安全、有效的方法 Objective To explore the method and technique of endoscopic treatment of ureteral orifice cyst in children. Methods The clinical data of 7 cases of pediatric ureteral orifice cyst were summarized, and the operative method of transurethral cystostomy endoscopic treatment of pediatric ureteral orifice cyst was reported. Results 7 cases of ureterocele were operated smoothly with less bleeding during operation. The operation was simple and fast. The patients were followed up for 6 months to 3 years. The clinical symptoms disappeared, and there was no water and reflux. Conclusion The treatment of pediatric ureteral orifice cyst by the lower abdominal wall vesico-stomy endoscope is a safe and effective method