Pole instrument of digging a hole. Relate to the pole assembling field, especially relate to pole instrument of digging a hole. The utility model provides a simple structure, the convenience is operated, improves work efficiency's pole instrument of digging a hole. Annular base's inboard is equipped with annular slide, the inboard of slide is equipped with the ring channel on a plurality of horizontal directions, is equipped with the spout no. 1 that a pair of symmetry in the vertical direction set up between the adjacent ring channel, and wherein, the top that lies in the ring channel of the top is equipped with the spout no. 2 of a pair of symmetry, the subassembly that breaks ground is including the cover body, ejector pin, horizontal push rod no. 1 and horizontal push rod no. 2, the cross -section of the cover body is the trapezoidal of big -end -up, the top edge of the cover body is equipped with the ball no. 1 of a pair of symmetry, a ball adaptation ground swing joint is in spout no. 1, spout no. 2 and ring channel, the utility model discloses it is reliable to dig a hole, and earth is piled up reliably, conveniently clears away.