Perforation of the bladder related to long-term indwelling urethral catheter is a rare and serious complication. A 85-year-old man with an indwelling urethral catheter presented severe hematuria, abdominal pain with rebound tenderness and muscular tension over the suprapubic area after the exchange of the urethral catheter. Computed tomography and cystogram revealed experitoneal bladder perforation due to indwelling catheter. Three weeks after the indwelling urethral catheter had been placed, the perforation was closed. In most cases, laparotomy and suprapubic cystostomy are performed. We describe the case of experitoneal bladder perforation successfully treated by urethral drainage.