The roller-type plate leveling machine utilizes the Bauschinger Effect to repeatedly bend the plate in alternating directions, gradually converting multiple original curvatures into a single uniform curvature, thereby leveling the plate. This model adopts a non-parallel roll arrangement structure, meaning the upper and lower rows of work rolls are staggered, and the upper row of work rolls features a tilting function — it can tilt at an angle relative to the lower row. The gap between the rolls gradually increases from the entry side to the opening side. In this way, as the steel plate being leveled is sequentially fed into the work rolls of the leveling machine, the bending curvature of the passing material gradually decreases. That is to say, the plate material at the entry side undergoes plastic deformation, and as the plate moves toward the exit side, its plastic deformation gradually diminishes until it reaches complete elastic deformation at the exit side.