To surface milling cutters for research object, established considering the single spindle partial pendulum milling cutter tooth surfaces of high speed cutting 3d surface morphology simulation model by using graphic matrix transformation principle and vector algorithms. Comparing the simulation and forecast of surface morphology and surface roughness with the actual machining surface morphology and surface roughness by using the workpiece simulation algorithm meshing, we verify the correctness of the simulation model. The simulation analyses the influence regularity of surface morphology and surface roughness by changing cutting parameters and geometrical parameters. This can help us choosing the reasonable cutting parameters and geometrical parameters and have significance on the actual machining. The surface milling cutters are high efficiency and good quality of cutting big plane or curved surface. With the development of high speed cutting technology, in high speed milling process, product crumbs tumor and scales thorn hardly exists, so cutter geometrical parameters, cutting data and so on will be the main influence reasons of surface roughness. In order to satisfied the quality requirements, at present, we choice tools and determine the milling parameters depending on experience but it is limited. The surface roughness of the processing components is reflected intuitively by processed surface of microscopic geometric shape. So surface of microscopic geometric shape produced by theory emulation is significant to forecast the surface roughness and selecting reasonable cutting parameters. Currently, there are some simulation method researches about surface of microscopic geometric shape. Zhao Xiao ming et al [1, 2] has researched the simulation modeling of microscopic geometric shape of ball end mills during processing; Xu An ping et al [3, 4] has researched the simulation modeling methods of peripherally milling processing; Zhang Guang Peng et al  has researched the inversion multiple tooth surfaces of the milling cutter surface morphology simulation and develop simulation software. But all above researches are ideal simulation of surface shape. There are few researches about simulation of surface shape on condition of spindle partial pendulum. Based on object of surface milling cutters, this article researches simulation modeling methods of surface topography on condition of high speed milling and give an account of the corresponding simulation algorithm. From the article, we also get the influence law of microscopic geometric shape depending on different milling dosage, cutter geometrical parameters and eccentric quantity and get the significance conclusion to actual production.