Abstract: Objective To compare and analysis the differences between a modifi ed Bricker urinary diversion and classic Bricker urinary diversion. Methods Clinical data of 46 cases modifi ed Bricker urinary diversion and 52 cases classic Bricker urinary diversion were summarized and analyzed respectively. Complications were noted and graded according to the Clavien-Dindo grading system. Results 34.8%（16/46）cases with modifi ed Bricker urinary occurred complications, 67.3%（35/52）cases with classic Bricker urinary diversion occurred complications. Patients received modifi ed Bricker urinary diversion had better outcome than patients received classic Bricker urinary diversion (30d, 15.4% vs. 4.3%; 90d, 17.3% vs. 6.5%). Conclusion Our results supported the importance and applicability of the Clavien-Dindo grading system could be utilized in the study of complications after urinary diversion, the life quality of modifi ed Bricker urinary diversion is much more satisfactory.