Aortopulmonary window is a rare congenital cardiac malformation, which is previously repaired using cardiopulmonary bypass. However, some cases were reported to repair the aortopulmonary septal defect by transcatheter closure. Here we present a 30 year-old woman with a 7-mm aortopulmonary window, who was successfully treated using a modified double-disk PmVSD occluder.