The diverticulum of the female urethra or sub-urethral pouch is in the form of a cul-de-sac lined with mucous membrane through the muscular layer of the urethra. Thus, it is a site of stasis, urinary infection, formation of calculus or even malignant tumor. The diverticula of the urethra or sub-urethral pouches in women have a prevalence of 0.5% to 6% depending on the series. We report the case of a 61-year-old patient operated for a diverticulum on fistulized urethra complicated lithiasis. Our patient had five pregnancies and five births when she consulted for dysuria, urinary burns evolving since a year. The urogenital examination revealed a partially stenotic urethral meatus and a 3-cm large fistulized intravaginal peri-urethral mass allowing urine leak. The mass was painful and hard at palpation. We performed transvaginal diverticulectomy. The follow-up was simple and the probe was removed two weeks after the surgery. An atomo-pathological examination of the resected diverticulum concluded an aspect compatible with lithiasis urethritis.