Three types of pit textures,circular,square and equilateral triangle textures were arranged neatly on both sides of lip end of lip seal ring.The finite element model of revolving shaft lip seal ring with surface texture was established,and the static contact pressure and deformation coefficient matrix of seal surface were obtained.A numerical model for the contact area seal of lip seal ring was established,which considered the influence of mixed lubrication, cavitation and surface texture shape,coupled with fluid field and elastic deformation field.A flow chart for calculating pump suction rate in the contact area of lip seal ring was established,which integrated finite element analysis and numerical calculation.The results show that the surface texture structure makes the contact pressure between the seal lip and the shaft decrease relatively,and effectively increases the film thickness of the lip seal ring and improves the pumping effect.Compared with the circular and square texture,the triangular texture has the best effect on improving lip seal ring.The surface texture structure can improve the lubrication state of the sealing area,but it also causes the fluctuation of dynamic pressure of the seal,and the influence of triangular texture is more significant.