Based on main shaft system dynamic-static characteristic of the machine tool, the work aims to study the mechanism on disc grinding surface generation.Taking the powder metallurgy stainless steel 316L as the research object,the element deformation model of correlated to the grinding system dynamic-static characteristic is set up, and the influence of main shaft system dynamic-static characteristic on the displacement of disc wheel arbitrary surface position is analyzed. Afterwards, based on the wheel abrasive position information and the size information, the three dimensional abrasive trajectory equation is set up. And the arbitrary adjacent two abrasives movement relationship is figured out. The profile search method is applied to analyze the disc grinding dynamic-static surface generation process on the workpiece surface material. Finally, combined with the corresponding disc grinding experiment, the influence regulation of the system dynamic-static characteristic on machining surface profile and surface roughness is investigated. The essence of uneven machining effect on workpiece surface is explained. Moreover, the parametric modified method on the generated surface quality is proposed as well. It shows that the static deformation at the faraway position from the workpiece center is relatively larger than that of the machining workpiece nearby center. However, the difference of the disc grinding system dynamic vibration is relatively smaller. To be specific, the static deformation gets larger with the increase of the feeding depth. And the disc grinding system dynamic vibration increases at the larger wheel rotation speed. It can be concluded that the static characteristic is a key factor to influence the disc grinding surface profile, and the grinding system dynamic characteristic can affect the machining surface roughness as well. Analysis shows that the grinding wheel speed is around 400 r/min. Matching workpiece speed with irrational speed ratio and small normal depth of cut that can improve the disc grinding surface quality characteristic.