Leveling machine is a special equipment for metal plate leveling at normal temperature. The leveling work roll uses the "Bauschinger effect" of the material to make the plate stretch and compress repeatedly between the upper and lower rolls, and make the multiple curvature turn into a single curvature gradually, and finally become flat and consistent, and the residual stress of the plate is small and evenly distributed. It is mainly applicable to the manufacturing industry of construction machinery, metallurgy, vehicles, metal structures, ships, pressure vessels, containers, chemical machinery, metal material storage, plate distribution and other industries. Users can match all kinds of plate and strip processing and forming equipment according to their needs to form an uncoiled leveling and shearing production line for a wider range of function extension.