Rectangular drilling machine

The utility model discloses a rectangular drilling machine. The lower end of a long drill pipe is fixedly provided with a motor; the lower end of the motor is fixedly provided with a transmission case; the lower end of the transmission case is provided with a short drill pipe E; the lower end of the short drill pipe E is fixedly provided with a drill bit; the left end of the transmission case is provided with a short drill pipe B; the right end of the transmission case is provided with a short drill pipe C; the front end of the transmission case is provided with a short drill pipe A; the rear end of the transmission case is provided with a short drill pipe D; the outer ends of the short drill pipe A, the short drill pipe B, the short drill pipe C and the short drill pipe D are each fixedly provided with four long cutters; the four long cutters at the outer end of each short drill pipe are crossed.