For a fiber-reinforced composite material epoxy resin composition, a prepreg and fiber-reinforced composite material

Less morphology variations by molding conditions, and excellent fiber-reinforced composite material in mode I interlayer toughness and moist heat resistance, the epoxy resin composition for obtaining this, and provides a prepreg obtained by using the epoxy resin composition. At least a following components [A] ~ epoxy resin composition comprising [F], 5 to 25 parts by mass of [C] the epoxy resin per 100 parts by weight blended, the [E] a fiber-reinforced composite material epoxy resin composition which comprises 2 to 15 parts by weight. [A] 2 polyfunctional amine type epoxy resin [B] 4 polyfunctional amine type epoxy resin [C] the epoxy equivalent is insoluble in the block copolymer [F] epoxy resin having a bisphenol F type epoxy resin [D] an aromatic amine curing agent [E] reactive groups that can be reacted with the epoxy resin is 450-4500 thermoplastic resin particles