In order to reduce the abrasion of the vehicle planetary gear bidirectional rotary axial sliding support,this paper introduces the bionics concept to the design of the micro texture on the supporting end face,and simplifies the fine aerodynamics of the bird wing structure to the parabolic groove,the double parabolic triangular groove and the double parabolic trapezoid groove. A numerical model of cavitation effect is established based on the boundary condition of mass conservation. The numerical model of the cavitation effect of the boundary conditions is established to analyze and compare the influence of the operating parameters and structural parameters of different groove types on the lubrication characteristics. The results show that the oil film bearing capacity and friction coefficient of the double parabolic triangular groove are the best in the three types of grooves based on bionic. The lubricating oil flow and cavitation rate of the double parabolic trapezoid groove are the best,and the lubrication performance of the parabolic groove is not too good or too poor,but the comprehensive lubrication performance is the best in the three.