To provide a punching device capable of performing a series of punching work from cutting to punching after setting a workpiece raw sheet roll such as a green sheet and a film for a flexible base plate wound into a roll shape is set as it is.

A workpiece delivering means for delivering a workpiece W drawn from a rotatably supported workpiece raw sheet roll by a pair of feed rollers 15 and for cutting it by a delivering cutter part 16 by the required length is provided adjacent to a table 2, and the workpiece W cut into the required length is placed on the upper surface of the table 2. A moving means 5 capable of being controlled in the X and Y directions is moved on the upper surface of the table 2, adsorbs and holds the upper surface peripheral edge of the workpiece W, and performs punching after being moved to a punching part 3. After punching, the moving means 5 is moved to a placing part 4, adsorption is released, the workpiece is dropped and placed. The required workpieces are sequentially completed by repeatedly performing a series of these operations.