NOVELTY - A solar cell panel back film and producing technique; the back film comprises the PET film matrix with thickness of 100-350 mu m; two faces of the matrix are coated with fluorine-containing polymer coating of 15-30 mu m, where one face of fluorine-containing polymer coating is coated with adhesive layer A of 0.5-5 mu m.    USE - The solar cell panel back film is useful in the industrial field.    ADVANTAGE - The invention improves the combination intensity between the layers of the back film, improves the aging resistance, weather fastness of the product, while the multi-layer structure design improves the insulation property and anti-water vapor permeability of the back film, and it can design and reform the product performance and appearance according to the requirement.    DETAILED DESCRIPTION - A solar cell panel back film and producing technique; the back film comprises the PET film matrix with thickness of 100-350 mu m; two faces of the matrix are coated with fluorine-containing polymer coating of 15-30 mu m, where one face of fluorine-containing polymer coating is coated with adhesive layer A of 0.5-5 mu m; the fluorine-containing polymer coating is obtained by directly coating the mixing latex obtained by processing the raw material component in dull polish after mixing in proportion on the PET film matrix; the raw material of the fluorine-containing polymer coating comprises the component matched in the following mass: 30-55% of fluorine-containing paint, 20-40% of solvent, the 2-6% of crosslinking agent and solidified agent, 15-40% of filler; where the fluorine-containing paint mainly is fluorine-containing high-molecular resin, the fluorine-containing high-molecular resin is one or mixture of more than two of the followings: polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, poly perfluoro propylene, fluorine rubber, trifluorochlorethylene-alkylethylene ether copolymer; the solvent is one or mixture of more than two of the followings: xylene, n-butanol, butyl acetate, propanediol methyl ether, butyl ether acetate, methyl pyrrolidone; the crosslinking agent and solidified agent is one or mixture of more than two of the followings: polyester resin, poly iso-nitrile acid ester, amino resin, epoxy resin, urea-formaldehyde resin, gamma-butyrolactone; the filler is one or mixture of more than two of the followings: titania, silica, ultrafine barium sulfate, lightweight calcium carbonate. INDEPENDENT CLAIMS are:    (1) a producing technique of the solar cell back film; and    (2) a fluorine-containing polymer coating composition for preparing the solar cell panel back film, where the fluorine-containing polymer coating composition comprises the component matched in the following mass: 30-55% of fluorine-containing paint, 20-40% of solvent, the 2-6% of crosslinking agent and solidified agent, 15-40% of filler; the fluorine-containing high-molecular resin is one or mixture of more than two of the followings: polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, poly perfluoro propylene, fluorine rubber, trifluorochlorethylene-alkylethylene ether copolymer; the solvent is one or mixture of more than two of the followings: xylene, n-butanol, butyl acetate, propanediol methyl ether, butyl ether acetate, methyl pyrrolidone; the crosslinking agent and solidified agent is one or mixture of more than two of the followings: polyester resin, poly iso-nitrile acid ester, amino resin, epoxy resin, urea-formaldehyde resin, gamma-butyrolactone; the filler is one or mixture of more than two of the followings: titania, silica, ultrafine barium sulfate, lightweight calcium carbonate.