In order to study the influence of surface topography on subsurface characteristics under the condition of elastohydrodynamic lubrication,two kinds of micro-pitted texturing surface topography were obtained by laser machining method.The oil film pressure and film thickness distribution were gained by substituting the measured surface topography data into numerical calculation procedure of elastohydrodynamic lubrication.The oil film pressure of corresponding operating condition was treated as the surface normal compressive stress,and the shear stress was calculated by using Rabinowicz empirical formula.The subsurface characteristics of the elastohydrodynamic lubrication interface were simulated by superimposing the surface normal compressive stress and tangential shear stress.The results show that the surface texture obviously changes the stress distribution of subsurface layer.The influences of micro-pit diameter and entrainment velocity on the magnitude and distribution of subsurface stress are different.In the process of friction,the deformation of subsurface decreases slowly at first and then rapidly with the increase of depth.The research results will provide a theoretical support for the design of surface topography to improve the stress conditions of bearing and other mechanical parts.