Abstract: A punching device has a base for placing papers thereon, a plurality of single hole device bodies fixedly arranged in one row in the horizontal direction at predetermined distances on the base. Each of the single hole device bodies is provided with a punching rod and an operation handle for moving the punching rod upward and downward. The punching device also has a communicating member for interconnecting the operation handles of the single hole device bodies. The papers placed on the base are punched by the simple upward and downward operation of the operation handles.