NOVELTY - A sealing material sheet comprises ethylene copolymer (A), and ethylene copolymer (B). The ethylene copolymer (A) is ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, high-pressure-process low-density polyethylene, ethylene- alpha -olefin-type copolymer, ethylene-glycidyl-(meth)acrylate copolymer other than component (B). The ethylene copolymer (B) is ethylene-glycidyl-(meth)acrylate copolymer, ethylene-vinyl acetate glycidyl-(meth)acrylate copolymer and ethylene acrylic ester-glycidyl-(meth)acrylate copolymer.    USE - Sealing material sheet is used for solar cell module (claimed).    ADVANTAGE - The sealing material sheet has excellent adhesion stability. The solar cell module using sealing material sheet has excellent durability.    DETAILED DESCRIPTION - A sealing material sheet comprises ethylene copolymer (A) having melting point of 90 degrees C or more, and ethylene copolymer (B). The ethylene copolymer (A) contains ethylene-derived structural units. The ethylene copolymer (A) is ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, high pressure-process low-density polyethylene, ethylene- alpha -olefin-type copolymer having density of 0.895 g/cm3 or more, ethylene glycidyl-(meth)acrylate copolymer other than component (B). The ethylene copolymer (B) is ethylene glycidyl-(meth)acrylate copolymer, ethylene-vinyl acetate glycidyl-(meth)acrylate copolymer and ethylene acrylic ester-glycidyl-(meth)acrylate copolymer. The amount of structure unit derived from vinyl acetate in ethylene-vinyl acetate copolymer is 15 %mass or less. The amount of structural unit derived from acrylic ester in ethylene-acrylate copolymer is 15 %mass or less. The amount of structural unit derived from vinyl acetate in ethylene-vinyl acetate glycidyl methacrylate copolymer is 30 %mass or less. The amount of structural unit derived from acrylic ester in ethylene acrylic ester-glycidyl methacrylate copolymer is 30 %mass or less. An INDEPENDENT CLAIM is included for solar cell module, which has substrate, solar cell element and sealing material sheet.