Researches of water lubricated bearing considering wall slip and inertial force effect were carried out for the study of lubrication mechanism and performance.On the basement of the establishment of the modified Reynolds equations considering wall slip and inertial force effect,the finite difference method was used to solve the equation.The effects of wall slip and inertial force on the water film pressure distribution,bearing capacity and friction coefficient were given.The proposed model and finite element method were used to calculate the lubrication performance of a certain actual bearing,and the results of the two were in good agreement.Researches show that wall slip and inertial force effect do not change the distribution of pressure,thickness,load capacity and friction coefficient.Inertial force effect slightly increases the pressure peak,load-carrying capacity and the friction coefficient by around 1%,while wall slip reduces them by around 5%.Compared with wall slip,the effect of inertia force on lubrication performance is relatively small and can be almost ignored.Research results have a certain significance for the design and calculation of water lubricated bearing.