The invention relates to a powder metallurgy 2xxx aluminum alloy thin plate and application, and belongs to the technical field of powder metallurgy preparation. By combining a powder metallurgy method and a solid solution and aging heat treatment process, the 2xxx aluminum alloy thin plate with the high performance is prepared. The operation method comprises the concrete steps of carrying out heat insulation on a powder metallurgy blank body with the thickness being less than or equal to 1mm at 625 DEG Cto 675 DEG C for 120 min to 240min so as to obtain an aluminum alloy thin plate; then carrying out heat insulation at 520DEG C to 550 DEG C, conducting cooling, conductingheating again to 470DEG C to 500 DEG C after cooling, and carrying out heat insulation; thenconducting oil quenching; and carrying out multistage artificial aging after oil quenching so as to obtain the product. The product obtained through the invention is excellent in mechanical performance; and through optimizing the heat treatment process and the oil quenching process, the mechanical performance of the product is improved, and meanwhile, the yield is ensured. The invention further explores the enhancement of the mechanical performance of a powder metallurgy ultrathin material and the synchronous improving of the yield for the first time. The invention provides an effective way for preparing an ultrathin foil with the high performance.