A 56-year-old man with an abdominal aortoduodenal fistula underwent abdominal aneurysm replacement with a graft, duodenal closure and omental filling. Fever developed after 1 month, and antibiotics were given. However, his high fever continued and an abscess was diagnosed by CT. The graft was ablated, the abdominal aortic stump closed and axillofemoral bypass performed. Peritoneal bleeding occurred 3 years later, when aortic stump bleeding was diagnosed and abdominal aortic replacement was performed using a thoracoabdominal oblique incision. After 2 years, anemia has not developed and his course is good.