Objective To investigate the value of laparoscopic pyeloplasty in the treatment of UPJO. Methods Eighty - six patients with UPJO were divided into minimally invasive group and traditional group with 43 cases in each group,according to the patients(or their families) willing. The minimally invasive group patients were treated by the laparoscopic pyeloplasty while the traditional group patients were treated by the open pyeloplasty. The operation time,bleeding volume and the amount of analgesic usage after operation,recovery time,hospitalization time, postoperative complications,postoperative recurrence rate of hydronephrosis of two groups were compared. Results The operation time of the min-imally invasive group was(153. 4 ± 26. 7)min,with no difference compared with the traditional group[(142. 6 ± 30. 5)min]( P > 0. 05). The bleeding,analgesic usage,the time of intestinal function recovery and the hospitalization time were respectively(29. 8 ± 4. 1)ml,(64. 2 ± 23. 9) mg,(1. 7 ± 0. 6)d,(7. 3 ± 2. 5)d,which were significantly smaller(or short)than those of the traditional group[(86. 3 ± 17. 2)ml,(107. 4 ± 35. 8)mg,(3. 6 ± 1. 3)d,(13. 5 ± 4. 2)d]( P 0.05）。微创组术中出血量、术后止痛药使用量、肠道功能恢复时间、住院时间分别为（29.8±4.1）ml、（64.2±23.9）mg、（1.7±0.6）d、（7.3±2.5）d，均显著少于（或短于）传统组[（86.3±17.2）ml，（107.4±35.8）mg，（3.6±1.3）d，（13.5±4.2）d]（ P <0.05）。微创组并发症发生率和肾积水复发率均为2.33%（1/43），显著低于传统组[6.98%（3/43），16.28%（7/43）]（ P <0.05）。结论与开放性肾盂成形术比较，腹腔镜微创离断式肾盂成形术可以促进 UPJO 患者术后康复，降低并发症发生率和肾积水复发率，是目前治疗 UPJO 较为理想的方法，值得临床推广运用。
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