Abstract: A base material for a solar cell module includes a base material film including at least one layer and a coating layer including at least one layer and formed on one surface or both surfaces of the base material film. The coating layer is a copolymer layer obtained by curing a liquid coating film consisting of an acrylic-based resin component consisting of metal alkoxide having a first reactive functional group, an acrylic-based monomer having a second reactive functional group that reacts with the first reactive functional group, and an acrylic-based monomer without the second reactive functional group; and an ethylene-based resin component having a carboxyl group binding to the first reactive functional group of metal alkoxide and including an ethylene monomer, a vinyl acetate monomer, and a monomer of carboxylic acid vinyl esters other than vinyl acetate.