Self-sealing pore is one of the important technologies to improve the antifriction and corrosion resistance of micro-arc oxidation coating. In order to solve the problem that the stability and expansion effect of sealing agent of physical sealing pore coating limited the service time. This paper uses the electrical property of graphene oxide to control the pore structure of ceramic coatings and to prepare GO/TiO₂ self-sealing pore ceramic coatings with antifriction effect. The effect of graphene oxide concentration on pore structure and antifriction of ceramic coating were discussed. The result show that the conductivity of electrolyte was changed by graphene oxide to affect the reaction process, which contributed to control the pore structure of the GO/TiO₂ coating. The self-sealing pore coating with the porosity, pore size and average friction coefficient of 3.6%, 2.5μm and 0.1 was prepared at the graphene oxide concentration of 5g/L, which decreased by 83.2%,78.4% and 87.5% respectively compared with traditional coatings. It is believed that the pore structure of micro-arc oxidation coating can be controlled by the concentration of graphene oxide, which provides a new idea for the preparation of antifriction self-sealing pore coating.