Abstract: Graphene oxide (GO) was prepared by a modified Hummers method,and then GO/furan resin composites were prepared through the solution blending and curing by increasing temperature step by step.The structure and morphology of the composites were characterized by FTIR,XRD and SEM.Meanwhile,the viscosity,glass transition temperature,thermal decomposition temperature,char yield and hardness were tested in detail.The results show that GO has good dispersibility in furan resin matrix and the interface between GO and furan resin of composites is quite compatible.Mechanical and thermal properties of GO/furan resin composites can be improved obviously.The glass transition temperature of the GO/furan resin composites with 0.3wt% of GO added increase by 36℃,and 5% mass loss temperature increased by 16℃ respectively compared with that of the pure furan resin.The char yield of GO/furan resin composites with 0.1wt% of GO added increase from 50.7% to 53.9% and the shore hardness increase from 90 to 97.