NOVELTY - An infrared-reflecting black polyvinylidene fluoride (PVDF) compound solar battery backboard composite film comprises first layer in front of air layer, and second layer. The first layer contains filler material of black complex inorganic color pigment (CICP) PVDF/polymethyl methacrylate (PMMA) blended resin including acrylate rubber (ACR) processing additive, dispersant and heat stabilizer. The second layer contains filler material of non-composite inorganic pigment and black CICP PVDF/PMMA blended resin including ACR processing additive, non-composite inorganic pigment and black CICP.    USE - Infrared-reflecting black polyvinylidene fluoride compound solar battery backboard composite film.    ADVANTAGE - The safe and reliable composite film has simple and easy-to-control manufacturing process. It has thickness of 30 mu m, high infrared reflection characteristic and has more than 90% sunlight shielding rate. The solar energy battery backboard has good weather resistance, water vapor barrier property and mechanical property.    DETAILED DESCRIPTION - An infrared-reflecting black PVDF compound solar battery backboard composite film comprises first layer in front of air layer, and second layer. The first layer contains filler material of black CICP PVDF/PMMA blended resin compound A comprising 50-80 wt.% PVDF resin, 10-40 wt.% PMMA resin, 2-5 wt.% ACR processing additive, 0.1-3 wt.% dispersant, 0.1-3 wt.% heat stabilizer and 0.5-15 wt.% black CICP. The second layer contains filler material of non-composite inorganic pigment and black CICP PVDF/PMMA blended resin compound B comprising 50-80 wt.% PVDF resin, 10-40 wt.% PMMA resin, 2-5 wt.% ACR processing additive, 0.1-3 wt.% dispersant, 0.1-3 wt.% heat stabilizer, 10-15 wt.% non-composite inorganic pigment and 0.5-15 wt.% black CICP. The black CICP comprises chromium, iron and manganese metal oxide calcined at 800-1400 degrees C to obtain black powder with average grain diameter of 0.3-2 mu m, where front surface is treated with silane. The PVDF resin is PVDF homopolymer and/or PVDF copolymer with melt flow index of 2-15 g/10 minutes. The PMMA resin is PMMA homopolymer or PMMA copolymer with melt flow index of 2-15 g/10 minutes. The ACR processing additive is monomer or copolymer of methyl methacrylate, acrylate, acrylonitrile or styrene. The dispersant is fatty acid ester, fatty acid amide, phthalic acid ester and/or polyethylene wax. The heat stabilizer is calcium, magnesium, zinc, barium, lead, metallic soaps, organic tin lead-acid ester, organic tin thiol and/or rare earth stabilizers. An INDEPENDENT CLAIM is included for manufacturing infrared-reflecting black PVDF compound solar battery backboard composite film comprising:    (A) treating surface of black CICP with organic silane, adding dispersant, heat stabilizer and PVDF resin into high-speed mixer, stirring at 80-100 degrees C for 10 minutes, cooling to below 45 degrees C, adding PMMA resin and ACR processing additive, continuously stirring at 80-100 degrees C for 10 minutes and cooling to 45 degrees C to obtain compound A;    (B) treating surface of black CICP with organic silane, adding non-composite inorganic pigment, dispersant, heat stabilizer and PVDF resin into high-speed mixer, stirring at 80-100 degrees C for 10 minutes, cooling to below 45 degrees C, adding PMMA resin and ACR processing additive, continuously stirring at 80-100 degrees C for 10 minutes and cooling to 45 degrees C to obtain compound B;    (C) extruding and granulating compound A and compound B at 170-210 degrees C in twin-screw extruder to prepare masterbatch; and    (D) extruding and melting in three-screw extruder at screw section temperatures of 160-180 degrees C, 180-200 degrees C and 20-220 degrees C, and mold head temperature of 210-220 degrees C, double-roller cooling and coiling.