NOVELTY - A solar cell back surface protection sheet comprises a weather-resistant resin layer (1) having film thickness (t mu m), a plastic film (2), and an adhesive bond layer (3). The weather-resistant resin layer is formed on one surface of the solar cell back surface protection sheet. The adhesive bond layer is formed on the other surface of the solar cell back surface protection sheet. The weather-resistant resin layer is formed using weather resistant resin composition containing acryl-type copolymer (A), polyisocyanate compound (B), black pigment (C) and particles (excluding black pigment).    USE - Back surface protection sheet is used for solar cell module (claimed).    ADVANTAGE - The back surface protection sheet has excellent abrasion resistance, weather resistance, heat resistance and moisture resistance, and is economical.    DETAILED DESCRIPTION - A solar cell back surface protection sheet comprises a weather-resistant resin layer (1) having film thickness (t mu m), a plastic film (2), and an adhesive bond layer (3). The weather-resistant resin layer is formed on one surface of the solar cell back surface protection sheet. The adhesive bond layer is formed on the other surface of the solar cell back surface protection sheet. The weather-resistant resin layer is formed using weather resistant resin composition containing acryl-type copolymer (A), polyisocyanate compound (B), black pigment (C) and particles (excluding black pigment) having average particle diameter of 5-100 nm and melting point of 120 degrees C or more. The acryl-type copolymer (A) has glass transition temperature of 0-50 degrees C, weight average molecular weight of 30000-150000, hydroxyl value of 2-100 (mg potassium hydroxide/g), and aromatic ring content of 50 weight% or less. The isocyanate group content of polyisocyanate compound (B) is 0.1-5 with respect to one hydroxyl group in the acryl-type copolymer (A). An INDEPENDENT CLAIM is included for solar cell module.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic cross-sectional view of back surface protection sheet.    Weather-resistant resin layer (1)    Plastic film (2)    Adhesive bond layer (3)