In order to improve the load carrying capacity（LCC）of oil film of the parallel slider bearing,the groove texture distributed in arithmetic progression was processed on the parallel slider bearing,and the oil film model of the bearing was established.Based on the inlet suction theory and continuity equation,the LCC of oil film was analyzed and calculated.The analytical solution shows that under the condition that cavitation occurred in each groove,the grooves distributed in arithmetic progression can improve the LCC of oil film when compared with the uniformly distributed grooves,and its changing amount increases in the form of parabola with the increase of common difference when textures are distributed in arithmetic progression.Based on the multiphase flow cavitation model in Fluent,the LCC of oil film of the bearing with grooves distributed in arithmetic progression was numerically calculated.The effects of different factors on the LCC were analyzed by combining the analytical and numerical results.The results show that when the cavitation condition is satisfied,the solutions of analytical and numerical calculation show the same law,which verify the analytical results.Compared with the uniformly distributed grooves,the maximum LCC increase with the grooves distributed in arithmetic progression is 32.57% at different pressure difference.The maximum LCC increase is 24.43% at different groove depths,and 27.51% at different oil film thickness.