Objective To evaluate the safety and efficacy of greenlight laser selective vaporization, per urethra dipolar plasma electrotomy and transurethral electroresection for the treatment of non muscle-invasive bladder cancer. Methods 536 cases of non-invasive bladder cancer during May 2002 to December 2011 were retrospective studied. The patients were divided into 3 groups according to operative procedures: green laser group (PVP group, 215 cases), transurethral plasma bipolar electric excision group (PKRBt group, 187 cases) and transurethral electroresection group (TURBt group, 134 cases). The indexes were compared including operation time, urinary indwelling catheter time after operation, length of stay after operation, relapse rate and complications after operation. Results There were no significant differences in operation time ［(50.18±18.76) min VS (49.88±13.23) min VS (51.21±15.32) min］ and incidence of infection(3.7% VS 7.0% VS 6.0%) after operation in the 3 groups. And the time of urinary indwelling catheter in PVP group was significantly shorter than in the other 2 groups ［(4.92±3.67) d VS (9.16±4.56) d VS　(9.37±5.78)　d, P＜0.05］, and there was no significant difference between PKRBt group and TURBt group. PVP group had a shortest length of stay after operation and TURBt group had a longest length of stay ［(7.64±4.87)　d VS (13.15±12.84)　d VS (16.24±13.23) d, P＜0.05］. The relapse rate in PVP group was significantly lower than in the other groups(7.4% VS 15.5% VS 17.2%, P＜0.05) and there was no significant difference between PKRBt group and TURBt group. The complications in PVP group were significantly fewer than in the other 2 groups(P＜0.05) and there was no significant difference between PKRBt group and TURBt group. Conclusions PKRBt has no more advantages besides fewer obturator nerve reflex than TURBt. Green laser photoselective vaporization is one kind of safe and effective treatment for non muscle-invasive bladder cancer. And it have such superiority as fewer trauma and bleeding, shorter time of indwelling urinary catheter and length of stay after operation, lower relapse rate and no obturator nerve reflex.