Twenty patients underwent enlarged choledocho-duodenostomy in the treatment of bile duct residual stones, stones lodged in hepatobiliary ducts, muddy calculi or distal stenosis of the common bile duct. Postoperative courses were all uneventful. Twenty one up to fourty one months follow-up found all patients well nourished and back to their original work. Postoperative duodenoscopy done in 17 cases found perianastomatic inflammation in 5, upper GI barium study revealed regurgitation in 4. B-model ultrasonography showed the extraction of residual stones. It is the author's belief that this procedure has the advantage of avoiding the "cul-de-sac" and bile stasis, hence preventing reflux and retrograde infection as well as its safety and easy performing.