For the frame characteristics of leveler and the leveler AGC control system requirements, this paper analyzed the structure of the frame. And using the finite element software ANSYS analyzed the stress distribution and deformation of leveler prestressedstand. Thus we can obtain the frame stiffness in different preload coefficient, and establish the corresponding AGC compensation model. All of this, the leveler control system can provide the precise compensation for frame bounce. Because of this, it improved the straightening precision, and achieved the lean straightening. Meanwhile, it can provide the feedback guarantee for the accurate correction of leveler model.