A manufacturing method for an aluminum nonwoven fiber material includes: a block forming procedure where molten aluminum is extruded into a space through micropores (42a) and, moreover, aluminum fibers formed by extrusion are maked fall on a predetermined support surface (43), thereby forming an aluminum fiber block on the support surface (43); a short fiber removing procedure in which removing treatment on aluminum short fibers shorter than a predetermined length from the aluminum fiber block is performed; and a pressurization procedure in which the aluminum fiber block subjected to the short fiber removing procedure is pressurized to form the aluminum nonwoven fiber material.