Postappendectomy bleeding is a rare and occasionally catastrophic phenomenon. Bleed-ing in the gastrointestinal tract may occur early or late. The cause of late bleeding included ulceration, vascular malformation or granuloma. We experienced a case of delayed appen-diceal stump ulceration and bleeding who underwent an appendectomy 1 year ago. The patient was admitted due to melena. A colonoscopy showed a well-circumscribed deep ulcer containing of silk suture material at the base of appendiceal stump. Biopsy revealed only granulation tissue with nonspecific inflammation. The silk was removed by biopsy forcep and sulfasalazine was tried. A repeat colonoscopy showed the complete ulcer heal-ing 3 months later. We report this case with a review of literatures.