The complications of ileal conduit urinary diversion were reported to be urinary tract infections, bowel obstruction, and delayed wound healing, but ileal conduit-enteric fistula is rare. We report a case of ileal conduit-enteric fistula after robotic intracorporeal ileal conduit urinary diversion. An 81-year-old man with muscle-invasive bladder cancer underwent robot-assisted radical cystectomy and intracorporeal ileal conduit urinary diversion. Twenty-two days after the surgery, we identified the presence of fecaluria. Loopography revealed an ileal conduit-enteric fistula. He underwent conservative treatment with fasting and intravenous hyperalimentation. Loopography was performed 48 days after the surgery. However, the fistula remained. Therefore, fistula closure surgery was performed 51 days after the surgery. Here we review the characteristics of 4 ileal conduit-enteric fistula cases reported in Japan.