The UV shielding properties and photocatalytic properties of nanomaterials will vary due to the different surface binding energies of the materials themselves.Nano?zinc oxide (NPs?ZnO),nano?ceria (NPs?CeO₂), NPs?ZnO/CeO₂ and graphene oxide modified zinc oxide/ceria nanocomposites (NPs?ZnO/CeO₂@GO) were prepared,and the prepared samples were characterized by XRD,FT?IR,SEM,and the UV shielding properties and photocatalytic properties were tested. The results show that the UV shielding ability: NPs?ZnO<NPs?CeO₂<NPs?ZnO/CeO₂<NPs?ZnO/CeO₂@GO, the maximum degradation rate of methylene blue dye after 3 h treatment is:NPs?ZnO/CeO₂@GO(0.92)>NPs?ZnO(0.89)>NPs?ZnO/CeO₂(0.75))>NPs?CeO₂(0.66).Moreover,the photocatalytic activity of NPs?ZnO/CeO₂@GO is stronger than other photocatalysts participating in the experiments.