Nine cases of recurrent ulcer, presenting at or near the anastomosis after gastrectomy for gastrduodenal ulcer, were treated at our surgical department from Jan. 1971 to Dec. 1978. In seven cases, re-resection with Roux-Y procedure was performed, and a truncal vagotomy was additionally undergone in only two cases. Excellent or very good results were obtained in all patients postoperativelly. As the cause of anastomotic ulperation, inadequate initial gastric resection are considered in 6 cases, exposure of non-absorbable suture materials at the suture line in 2 cases, and postoperative administration of steroid hormone in 1 case.