Abstract: The graphene oxide(GO) was prepared by the modified Hummers' method and nano graphene oxide/poly(butylene succinate) (GO/PBS) composites were synthesized via in situ compound technology, and its properties were studied. The experimental results showe that a suitable content GO can accelerate the crystallization process of GO/PBS composite. A certain amount of GO can improve the mechanical property and increase the speed of enzyme degradation. Otherwise, the crystal size of composites modified by inorganic nanoparticles is reduced, GO serves as an effective nucleating agent for the crystallization of GO/PBS.