The auger is a type of auger blade drilling machine, including the drill frame, on which there is a slide, and also a reduction box that can slide up and down the slide. The reduction box is connected with the power input shaft and the power output shaft. The other end of the power input shaft is connected with the hydraulic motor, and the other end of the power output shaft is connected with the drill pipe, and the lower end of the drill pipe is connected with the drill bit.