A very rare case of congenital esophago-bronchial fistula in the adult is reported. Sixty-five years old, female. Complaining cough at drinking water and epigastric pain was diagnosed as esophago-bronchial fistula with esophageal diverticulum by Barium swallow and esophagoscopy. The resection of the fistula and diverticulum and the repair were carried out with smooth postoperative course. No evidence of inflammation along the fistula was demonstrated at surgery and microscopic findings of the resected material revealed the direct communication from the squamous epithelium to the cuboidal epithelium with underlying muscle layer in the wall. These results suggested this case the congenital esophago-bronchial fistula (Braimbridge type I).