The invention provides an aluminum alloy extrusion residue recovery method, and belongs to the technical field of aluminum alloy processing. The aluminum alloy extrusion residue recovery method comprises the following steps of using an extrusion rod and an extrusion tube for extruding a round cast ingot in an extrusion mold; when the greater value of the rest length of the round cast ingot in theextrusion tube than the pressing residue length reaches the first distance d1, stopping the extrusion; sequentially retreating the extrusion rod and the extrusion tube; when the rest round cast ingotin the extrusion tube and aluminum alloy in the flow division hole of the extrusion mold generate stretch fracturing, continuously retreating the extrusion rod and the extrusion tube for a second distance d2; covering lubricating agents on the surface of the round cast ingot exposed out of the extrusion tube; continuously performing extrusion so as to stop extrusion when the extrusion rod advancesfor a third distance S; retreating the extrusion rod and the extrusion tube again; using the extrusion rod for discharging the aluminum alloy remained in the extrusion tube. The aluminum alloy extrusion residue recovery method provided by the invention has the advantages that the operation is simple; the residue aluminum alloy content in the extrusion mold can be effectively reduced; the aluminumrecovery rate is improved.