NOVELTY - The solar battery back film comprises a substrate (2), an ethylene vinyl acetate rubber film formed on an inner surface of the substrate, a macromolecule adhesive layer (3), an aluminum foil layer (4), a polymer adhesive layer, a polyethylene/polyethylene naphthalate layer (5), a silicon film forming layer (6), a fluorine containing coating layer, a fluorinated siloxane film forming layer coated on an outer layer of the substrate, and a base layer. The base layer is a polyethyleneterephthalate layer and a polyethylene superfine closed foaming layer, and has a thickness of 0.1-10 mm.    USE - Used as a solar battery back film.    ADVANTAGE - The hydrolysis-resistant solar battery back film can be manufactured with compact size, high durability, increased electrical performance, improved weather and corrosion resistance, and excellent water vapor barrier performance, and provides excellent bonding strength with other package materials such as silica gel.    DETAILED DESCRIPTION - The solar battery back film comprises a substrate (2), an ethylene vinyl acetate rubber film formed on an inner surface of the substrate, a macromolecule adhesive layer (3), an aluminum foil layer (4), a polymer adhesive layer, a polyethylene/polyethylene naphthalate layer (5), a silicon film forming layer (6), a fluorine containing coating layer, a fluorinated siloxane film forming layer coated on an outer layer of the substrate, and a base layer. The base layer is a polyethyleneterephthalate layer and a polyethylene superfine closed foaming layer, and has a thickness of 0.1-10 mm. The ethylene vinyl acetate film layer has a thickness of 0.01-0.1 mm. The adhesive layer has a thickness of 0.005-0.01 mm. The aluminum foil layer has a thickness of 0.015-0.018 mm. The polyethylene layer has a thickness of 0.012-0.05 mm. The silicon film layer has a thickness of 0.01-5 microns. An outer surface of the fluorine-containing coating layer form the fluorinated siloxane film forming layer by the plasma silicon fluoride treatment. An inner surface or outer surface of the polyethylene naphthalate layer of the fluorine-containing coating layer forms the silicon-titanium film layer via plasma silicon-titanium. The fluorine-containing coating layer comprises a tetrafluoroethylene base film layer or vinyl chloride film layer, and has a thickness of 5-200 microns.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a solar battery back film.    Substrate (2)    Macromolecule adhesive layer (3)    Aluminum foil layer (4)    Polyethylene layer (5)    Silicon film layer. (6)