Abstract: A fiber-reinforced resin composition, which comprises:an epoxy resin having at least two epoxy groups in the molecule,a polymerizable unsaturated group-containing epoxy compound of the following general formula [I], ##STR1## wherein R.sup.1 is H or CH.sub.3, R.sup.2 is an alkylene group having 1 to 20 carbon atoms, and n is an integer of 0 to 20,a liquid carboxylic acid anhydride containing a monofunctional carboxylic acid anhydride and/or a polyfunctional carboxylic acid anhydride obtained by reacting a lower aliphatic polyhydric alcohol with a trimellitic acid or a derivative thereof,a curing promoter,a radical polymerization initiator, anda fiber,the glass transition temperature (Tg, .degree.C.) and breaking strain (E, %) of a cured product of said composition satisfying the following formulae:Tg.gtoreq.-17E+240E.gtoreq.4, andTg.gtoreq.125.

Abstract: A process for producing a fiber-reinforced resin molding, which includes placing a fiber reinforcement in the cavity of a mold composed of a top force and a bottom force; closing the mold, slanting the mold at an angle of 15.degree. to 90.degree. degrees, rejecting a liquid resin material into the cavity; curing the resin material; and after completion of curing, opening the mold to withdraw the molding therefrom, therein the inside of the cavity is brought into a pressurized state by a pressurized gas during the period after completion of injection of the liquid resin material till gelation of the resin material, and such a pressurized state is maintained until completion of curing.