Purpose of investigation: The authors’ objective was to investigate the predisposing factors and treatment results of genitourinary (GU) system injuries that occur following gynecological and obstetric surgery (GOS). Materials and Methods: They evaluated retrospectively 87 consecutive patients who had GU tract injury occurring with GOS between 2005 and 2015. Results: There were 87 patients that had GU tract injury, in which 57 had bladder injury, and 30 had ureteral injury. Of the patients who had bladder injury, 38 had only bladder injury and underwent primary repair. Nineteen patients had vesicovaginal fistula and all underwent open transabdominal transvesical repair after three months. Among the 30 ureteral injuries, four were ligation, nine incomplete cut, ten complete cut, and seven fistula. Two patients who had ligation underwent nephrectomy, and two underwent deligation. Nine patients with incomplete cuts underwent primary repair and stenting; end-to-end anastomosis was performed in ten patients with incomplete cuts. Three patients with ureterovaginal fistula underwent ureteroneocystostomy and Boari flaps were performed in four patients. Conclusion: GU system injuries may occur following GOS. When treated early and properly, recovery without complications is possible.