With the development of hydrodynamic lubrication in nanoscale,the influence of the electric double layer on the lubrication performance become significant.Considering that the relative speed of the friction pair is time-dependent in the lubrication process,a physical model for lubrication with electric double layer effects that considers the effect of ion transport,fluid flow characteristics and electric field was presented,and the influence of the relative speed of the friction pair and the Zeta potential difference on the pressure of the lubricating film was analyzed.The results indicate that the relative movement of the friction pair results in an unbalanced distribution of the electric potential.The equilibrium electric potential is biased towards the Zeta potential of the moving wall,and the increase of the relative speed increases the level of imbalance.The Zeta potential has a significant effect on the bearing capacity of the lubricant,as the Zeta potential increases from zero,the electric viscosity and the bearing capacity of the lubricant first increases and then decreases.The proposed model realizes the transient simulation of electric double layer lubrication with variable speed,which lays a theoretical foundation for the dynamic performance analysis of electric double layer lubrication under dynamic working conditions.