Surface textures of rectangular grooves were designed on one sliding bearing inner surfaces with axial symmetrical distribution.A dynamic pressure lubrication model of radial sliding bearing was set up based on Reynolds equation,and the influence of texture parameters on the bearing capacity and friction coefficient of sliding bearing was researched.The results show that the sliding bearing with rectangular groove textures has better bearing performance,the rectangular groove textures have less influence on friction coefficient.With the increasing of the texture width,the load capacity of the sliding bearing is increased,but the corresponding frictional resistance is also increased,there is an optimal texture width that the bearing can obtain a larger bearing capacity under smaller friction force.The parameters of the rectangular groove have important influence on the lubrication performance of the bearing,and the reasonable parameters selection of rectangular groove can obviously improve the lubrication performance of the bearings.