Large bladder hernias protruding into the scrotum are rare, with 23 cases having been reported previously in Japan. We report a case of a patient with a bladder hernia secondary to benign prostatic obstruction who demonstrated a unique voiding procedure. The patient manually compressed his scrotum at micturition to facilitate bladder emptying. He underwent subcapsular prostatectomy, followed by inguinal hernia repair. Postoperatively, the voiding procedure and urinary flow returned to normal. We should pay attention to symptoms of bladder hernia in the follow-up of patients with bladder outlet obstruction.