A novel matrix resin system, oligoimide-epoxy resin, has been developed to prepare glass fiber reinforced composites. Benzidine bismaleimide-diaminodiphenyl methane (BBM-DDM) and ethyl-ene bismaieimide-diaminodiphenyl methane (EBM-DDM) oligo-mers having more —NH2groups were prepared through the Michael addition reaction. These oligoimides were used for curing of commercial epoxy resin (i.e., diglycidyl ether of bisphenol-A) at 120°–140°C to fabricate crosslinked oligoimide-epoxy resin glass fiber reinforced composites without the evolution of byproduct. The fabricated composites (i.e., laminates) were characterized by their chemical resistance and mechanical properties.