▎ 摘　　要

NOVELTY - Preparing epoxy resin composite material comprises (i) mixing the dopamine-modified graphene oxide, multifunctional epoxy resin, curing agent and polar organic solvent, and (ii) curing to obtain an epoxy resin composite material; where the curing is the first curing, the second curing and the third curing performed in sequence; where the first curing is carried out at 125-135degreesC at 1.5-2.5 hours, the second curing is carried out at 145-155degreesC for 1.5-2.5 hours, and the third curing is carried out at 175-185degreesC for 1.5-2.5 hours. USE - The method is useful for preparing epoxy resin composite material. ADVANTAGE - The material has synergetic effect, reduces activation energy of reaction, promotes curing reaction of epoxy resin to proceed forward, and reduces temperature and time of the curing process.