Light-driven micromachine is emerging as promising candidate in micro/nanomotor field.As one kind of colloidal particle,it can spontaneously convert light energy in the environment into kinetic energy to complete autonomous motion[1].However,most of the conventional inorganic-oxide-based photocatalytic micromotors reported so far use wide bandgap photocatalytic materials such as TiO2 and ZnO as substrates,which need to be activated by ultraviolet light,and consequently limits their applications in environmental and biological field[2-3].As a typical p-type narrow bandgap semiconductor functional material,Cu2O exhibits excellent photoelectric effect,bacteriostatic and photocatalytic performance with visible light excitation[4-5].In this work,we synthesis Cu2O microparticles by liquid phase reduction method,and modify the surface to design Cu2O-Au Janus spherical micromotors and Cu2O@g-C3N4 core/shell structure micromotors.By adjusting the wavelength and intensity of the light source and selecting different concentrations of hydrogen peroxide and glucose as chemical fuel,the optical-drive performances of micromotors under different conditions are compared.Furthermore,such micromotors display photodegradation capacity of methyl orange solutions under visible light irradiation and have a great potential for repairing environment.