The solar cell element encapsulation resin composition and a solar cell module

The present invention, at least two, and a polymer block mainly composed of repeating units derived from an aromatic vinyl compound [A], at least one polymer block composed mainly of repeating units derived from a chain conjugated diene compound a block copolymer having a [B], the total block copolymer, the weight fraction of the total polymer block [a] and (wA), the total polymer block weight fraction of [B] (wB ) ratio of (wA: wB) is 20: 80 to 60: the block copolymer is 40, 90% or more of the total unsaturated bonds containing a block copolymer hydrides obtained by hydrogenating, tensile modulus (23 ° C.) the solar cell element encapsulation resin composition is 1.0～500MPa; and a solar cell module.