Celiac artery aneurysms are extremely rare vascular lesions usually diagnosed by chance. A 62-year-old male was being referred to Kyungpook National University Hospital with a seven day history of upper right quadrant abdominal pain. A computed tomography scan revealed an acute cholecystitis and a 7-cm sized huge aneurysm located from the origin of celiac artery to the bifurcation of celiac artery. After an initial cholecystectomy, the aneurysm was opened and the origin of celiac artery was oversewn with aorta followed by transposing and implanting the conjoined splenic-hepatic trunk to supraceliac aorta. The patient was discharged without complications on the tenth postoperative day. Conjoined splenic-hepatic trunk transposition for the repair of a celiac artery aneurysm may be an appropriate alternative option especially in cases complicated with other infectious conditions.