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目的:分析术者对完全腹腔镜根治性膀胱切除(LRC)＋改良回肠通道术(MIC)的学习效果。方法:回顾性分析首都医科大学附属北京朝阳医院2014年4月至2019年10月42例接受完全LRC＋MIC患者的临床资料。男34例，女8例；年龄(63.4±9.1)岁。其中术者1行34例手术，术者2行8例。将术者1的34例按时间顺序分为3组，第1～12例为A组，第13～23例为B组，第24～34例为C组；术者2实施的8例为D组。4组中有腹部手术史者分别为0、1、4、3例，差异有统计学意义(n P0.05)。改良术式的重要步骤包括光源透射下离断肠系膜、输出袢固定的条件下行输尿管-输出袢反流性对端吻合、缝合后腹膜缺口。比较各组患者手术时间、构建回肠通道时间、出血量、并发症发生比例、淋巴结清扫数量、切缘阳性比例等重要手术指标。n 结果:各组手术均顺利完成，均无中转开放手术。A～C组手术时间分别为330.0(320.0，360.0)、300.0(250.0，308.0)、270.0(216.0，324.0)min，差异有统计学意义(n P ＝0.010)；3组构建回肠通道时间分别为136.5(131.3，147.5)、92.0(79.0，119.0)、79.0(72.0，115.0)min，差异有统计学意义(n P0.05)。D组手术时间420.0(350.0，450.0)min，与A组比较差异有统计学意义(n P0.05)。n 结论:完全LRC＋MIC学习效果明显，随着手术例数的增加，手术时间及构建回肠通道时间显著下降；该术式具有较好的可重复性和安全性。“,”Objective:To analyze the learning effect of laparoscopic radical cystectomy(LRC)+ modified ileal conduit(MIC).Methods:From 2014 to 2019, 42 patients underwent MIC and their clinical data was retrospectively analyzed. 34 operations were performed by surgeon 1 and 8 operations by surgeon 2. We divided the 34 patients of surgeon 1 into three groups according to their surgical sequence (group A, 1st to 12th; group B, 13th to 23th; group C, 24 th to 34 th), the 8 cases of surgeon 2 was regarded as group D. The history of abdomen surgery in the 4 groups were 0, 1, 4, 3 cases, respectively (n P0.05). The operative time of group D was 420.0(350.0, 450.0)min, and it reached statistical significance (n P0.05).n Conclusions:The learning effect of LRC+ MIC was obvious. When surgeon volume increased, the operative time decreased significantly. Variables like estimated blood loss and complication rate of the 2 surgeons did not reached significant difference, which indicated reproductivity and safety of this procedure.