A drill device for a printed circuit board is provided to prevent a drill bit being damaged by lowering the temperature of the drill bit. A drill device for a printed circuit board comprises: a drill bit(2) for making a hole on the printed circuit board; a spindle(4) for rotating the drill bit; a pressure foot(10) mounted at a lower part of the spindle in order to support the printed circuit board; a bushing(12) installed at the down center of the pressure foot in order to guide the drill bit to the printed circuit board; an air supply line installed at one side and lower part of the pressure foot; and an air supply unit(16) supplying the air to the air supply line. The pressure foot prevents a chip being separated to the outside by the rotation of the drill bit by making a chamber(6) surrounded with the drill bit. A communicating pipe(8) is formed on one side of the pressure foot. The air supply the air to the bushing to deliver the chip generated in bushing to the inside of the chamber.
