The invention provides a drawing clamping device forming a compressed air supplying channel of spray nozzles easily. The drawing clamping device is provided with a flat-board-shaped body provided with an opposite face (31) opposite to a work piece. The body is provided with a plurality of drawing units spraying air from the opposite face (31), supply channels providing compressed air for the drawing units and a plurality of air discharge holes penetrating through the body in the thickness direction. Each drawing unit is provided with a cylindrical space (45) of a round spray port (41) open in the opposite face (31), a plurality of spray nozzles (44) open in the inner peripheral wall of the cylindrical space (45). The supply channel is provided with a distributing channel (62) distributing compressed air to the spray nozzles (44) and a common supply channel (47) providing compressed air for the distributing channel (62). Besides, the drawing units, the distribution channel (62) and the common supply channel (47) are formed on different metal boards.