Objective        To retrospectively review the 30-day postoperative complications of the bladder cancer patients following radical cystectomy (RC) in order to find some risk factors of these complications.       Methods        Clinical data of 313 consecutive RCs and urinary diversion who operated in our institute from January 2000 and October 2010

were collected. The 30-day postoperative complications were entered into a complication database and retrospectively reviewed for accuracy. Univariate regression models were used to define risk factors of complications.       Results        Of 313 patients

118 (37.7%) experienced at least 1 complication within 30 d of surgery

and 159 episodes of 19 complications. Severe complications covered 22.9%. Four cases died

accounting for 3.4% of all complications (4/118) and 1.3% of mortality. Among all complications

incomplete ileus were most common (27 episodes

17.0%) followed by posterior urethral stricture (14.5%) and urinary leak (12.6%) . When complications were defined and stratified into 8 specific categories

genitourinary complications were most common (37.1%). One univariate analysis showed age（P=0.014）and

American society of anesthesiologists (ASA) score（P=0.019）were most significant factors for complications

but not different ways of urinary diversion.       Conclusion        RC and urinary diversion for bladder cancer have a high rate of complications

but low rate of severe complications and mortality. Age

ASA score

postoperative stay and blood transfusion are high risk factors for postoperative complications.