In order to investigate the influence of elliptical textured surface on hydrodynamic lubrication performance of valve pair of hydraulic motor,a hydrodynamic lubrication model of elliptical textured valve pair surface was established.CFD method was used to analyze the change rule of friction lubrication performance of two rotating surfaces with the elliptical texture of different sizes and area ratios.The results show that the elliptical textured surfaces with different sizes can produce good hydrodynamic lubrication performance.The water film bearing capacity of different sizes of elliptical texture shows different change rules with the change of area ratio,but the same size of textured surfaces show the same changing rules with the change of area ratio,and the greater the rotation speed, the more obvious the regularity.At the same area ratio, the higher the rotation speed,the higher the water film bearing capacity of the texture.The water film bearing capacity of elliptical texture with different sizes is different under their optimal area ratio,and the elliptical texture with long axis and short axis of 1.6 mm and 0.8 mm respectively shows the optimal water film bearing capacity.