To provide a plate working machine which can efficiently work a plate and can prevent a fault due to the deviation of the plate in the case of thereafter conveying the plate or post-working the plate.

The plate working machine 1 works to mold a plurality of plates in a superposed state. The machine 1 comprises a plate working machine body 17, and a controller 18 for controlling the body 17. The body 17 is made of a turret bunch press or the like. The controller 18 makes the body 17 to work to mold for the purpose of preventing the superposed plates from being deviated from each other and to then perform an original work necessary for a plate worked product.