NOVELTY - A surface protective sheet (1) for a solar cell (7), comprises a polyethylene naphthalate film (2) or polyamide-imide film, and an inorganic oxide film (3) formed on one surface of the polyethylene naphthalate film or polyamide-imide film. In the sheet, the absorbance of light having a wavelength of 350-400 (preferably 380) nm is 1-20%, when the film is polyethylene naphthalate film. In the sheet, the absorbance of light having a wavelength of 300-350 (preferably 325) nm is 1-20%, when the film is polyamide-imide film.    USE - As a surface protective sheet for a solar cell of a solar cell module (claimed) e.g. space solar cell module for artificial satellite.    ADVANTAGE - The surface protective sheet is capable of suppressing a decrease of output of a solar cell module during a long period of use.    DETAILED DESCRIPTION - A surface protective sheet (1) for a solar cell (7), comprises a polyethylene naphthalate film (2) or polyamide-imide film, and an inorganic oxide film (3) formed on one surface of the polyethylene naphthalate film or polyamide-imide film. In the sheet, the absorbance of light having a wavelength of 350-400 (preferably 380) nm is 1-20%, when the film is polyethylene naphthalate film. In the sheet, the absorbance of light having a wavelength of 300-350 (preferably 325) nm is 1-20%, when the film is polyamide-imide film. The inorganic oxide film is a laminated body of a silicon oxide film and a titanium oxide film, or a laminated body of a silicon oxide film and a tantalum oxide film. An organic compound film is formed between the polyethylene naphthalate film and the inorganic oxide film, by curing a radiation curable resin.    DESCRIPTION OF DRAWING(S) - The figures show a schematic cross-sectional view of a surface protective sheet for a solar cell and a schematic cross-sectional view of a solar cell module.    Surface protective sheet (1)    Polyethylene naphthalate film (2)    Inorganic oxide film (3)    Silicone resin (5)    Solar cell string (6)    Solar cell (7)