目的:探讨输尿管肾镜钬激光内切开术治疗输尿管狭窄和输尿管肾盂连接部(UPJ)狭窄的疗效及其安全性。方法:输尿管狭窄和UPJ狭窄81例,其中输尿管狭窄67例,UPJ狭窄14例。狭窄长度0.5～3.2cm,平均1.6cm。应用Wolf8/9.8半硬性输尿管肾镜和钬激光将狭窄段全层切开,并超过狭窄段上、下缘约0.5cm左右,直至见到输尿管/肾盂壁外脂肪,UPJ狭窄于后壁、侧壁或者后外侧切 Objective: To investigate the efficacy and safety of ureteroscopic holmium laser in the treatment of stenosis of ureter and ureteropelvic junction (UPJ). Methods: Ureteral stenosis and UPJ stenosis in 81 cases, including 67 cases of ureteral stricture, UPJ stenosis in 14 cases. Narrow length of 0.5 ~ 3.2cm, an average of 1.6cm. Application of Wolf8 / 9.8 semi-rigid ureteroscope and holmium laser will be full-thickness incision of the stenosis, and beyond the upper and lower stenosis of about 0.5cm, until you see the ureter / renal wall fat, UPJ stenosis in the posterior wall, side Wall or posterolateral cut