The invention discloses a resource utilization method for aluminum ash residues of recycled aluminum, and belongs to the technical field of metal recycling and utilization. The treatment and utilization method includes the following steps: (1) cleaning the aluminum ash residues and drying the cleaned aluminum ash residues: throwing the aluminum ash residues, a cleaning agent and water into a cleaning device, after cleaning is finished, enabling the cleaned materials to enter dehydration drying equipment, and processing the aluminum ash residues under combined action of a centrifugal drum and heating plates; (2) screening the aluminum ash residues and grinding the screened aluminum ash residues: enabling the aluminum ash residues subjected to dehydration and drying to enter a screening machine to obtain aluminum ash residues containing 87% or more of an aluminum element, and performing grinding treatment on the screened aluminum ash residues through a dry ball mill; and (3) smelting thealuminum ash residues: throwing the treated aluminum ash residues into a low-temperature melting furnace, and at the same time, adding a smelting agent, performing low-temperature smelting in the furnace, and after treatment is performed, throwing aluminum hydroxide into a high-temperature calcining furnace to obtain aluminum oxide. The method disclosed by the invention has a high resource utilization degree, small pollution and high efficiency, and meets requirements of resource utilization.