PURPOSE: To produce the composite material in which reinforcing fibers are uniformly orientated by heating and pressurizing the fabric composed of the yarn made of thermoplastic resin and the yarn of reinforcing fiber at the melting temperature of said thermoplastic resin or higher.

CONSTITUTION: Glass fiber rovings are used for warps, and polypropylene strip yarns are used for wefts, and thus the fabric mixing a plain cloth therewith is woven, using a manual weaving machine. The fabric is pressurized by a compression molding machine, after the fabric has been heated between hot plates, while fixing the direction of the longitudinal yarn of the fabric. After cooling, a composite material is obtained. Thus, the composite material in which the glass fibers are arranged equidistantly and finely in parallel may be abtained.