The invention relates to a functional composite packaging aluminum plastic film for a lithium battery. The functional composite packaging aluminum plastic film comprises a modified polypropylene layer, a nanopartice layer, a first binder layer, a fluorocarbon coating layer, an aluminum foil layer, a second binder layer and a nylon layer, wherein the aluminum plastic film is formed by sequentially laminating the modified polypropylene layer, the nanopartice layer, the first binder layer, the fluorocarbon coating layer, the aluminum foil layer, the second binder layer and the nylon layer from inside to outside. According to the functional composite packaging aluminum plastic film disclosed by the invention, due to the fact that the nanoparticle layer with high water absorptivity is added, the condition that water vapor enters into electrolyte to generate corrosive acids such as hydrofluoric acid and other gases can be effectively inhibited, and further the comprehensive barrier property of the aluminum plastic film is improved; besides, an inner layer of an aluminum foil in the aluminum plastic film is coated with fluorocarbon coating, so that the corrosion of the electrolyte to the aluminum foil can be effectively resisted, and the corrosion resisting property of the aluminum foil is enhanced. The functional composite packaging aluminum plastic film disclosed by the invention is produced by adopting a multilayer bonding and laminating composite technique, is simple in processing and easy to implement, and has excellent barrier property, heat sealing property, extending property and corrosion resisting property.