Abstract: The secondary cross-section geometry and embedding depth of magnetorheological polishing ribbons are important factors that affect the pressure field during magnetorheological polishing. Three experimental models of plane, spherical and convex are established, and cross-combination experiments are carried out on the embedding depth and shape of the experimental section. The effects of different shapes of quadratic cross-sections on the creation of the pressure field of magnetorheological polishing are compared. The influence of the embedding depth on the creation of the pressure field strength of the polished ribbon and the effect of the removal efficiency of the polished ribbon are explored. The experimental results show that the overall pressure value of the convex quadratic section under different embedding depths is the largest among the three models.In the planar quadratic section, the embedding depth is positively correlated with the level of the pressure field. In the spherical quadratic section in the model, with the continuous change of the embedding depth of the spherical quadratic cross-section, the pressure value presents a concentrated distribution phenomenon. Only a few areas are existed where the pressure value deviates from the pressure value concentrated distribution area, and the pressure value concentrated distribution area is 5.57~8.24 MPa.In the convex quadratic section model, the embedding depth of the convex quadratic section is also positively correlated with the overall pressure value.