The combined design of the shape of the micro-texture was carried out on the oil seal surface,and the static contact pressure and deformation influence matrix of the oil seals with different combined micro-textures were analyzed by Abaqus simulation analysis.Based on the two-dimensional average Reynolds equation,a fluid lubrication model considering the influence of surface roughness and the cavitation of the lip oil film was established,and the influence of different shapes of the micro-texture structure on the sealing performance of the rotating oil seal was analyzed.The results show that under the same working conditions,compared with the non-textured oil seal,the micro-texture significantly improves the pump suction rate and oil film thickness of the oil seal,and the combined texture has a better improvement effect than a single triangular texture.The combination of triangle and semi-circular textures has the best effect on improving the pump suction rate of the oil seal,while the combination of semi-circular and square textures has the best effect on improving the film thickness of the oil seal.