Abstract: Edge drop and flatness, as important indicators of cold-rolled silicon steel, directly affect the product′s dimensional accuracy and yield rate.For a steel mill where the shape quality ofsilicon steel ultra-thin strip produced by the Sendzimir mill does not meet production needs, field process parameters were used to establish an explicit dynamic three-dimensional finite element model of the integrated roll system-strip steel via ANSYS/LS-DYNA software, with field measurement data employed to verify the model′s accuracy.Strip edge drop and flatness were used as evaluation indices of strip shape to determine the influence of rolling parameter variations on the metal flow of strip under stable rolling conditions.The results indicate that both increasing the strip width and reducing the reduction can alleviate edge thinning; however, the ability of tension adjustments to affect edge thinning is limited,and changes in roll speed exhibit no significant effect on edge thinning, while increased tension markedly improves flatness.The comprehensive flatness decreased from 27.09 IU to 6.77 IU.The results provide process guidance for the effective shape control of thin-gauge silicon steel strips during production.