Pit digging device for road greening construction

The utility model discloses a pit digging device for road greening construction, which comprises a base, a mounting frame, a limiting plate, a stepping motor and a driving motor, and auxiliary rods and first threaded rods are mounted between the outer surfaces of the two sides of the bottom end of the top end of the mounting frame and the outer surfaces of the two sides of the top end of the base correspondingly. According to the pit digging device for road greening construction, when the whole pit digging device is used, an auxiliary rod, a first threaded rod and a limiting plate are arranged, so that when drilling is conducted on the whole, a pit digging drilling structure on one side of the limiting plate starts to slowly descend and ascend only by controlling rotation of an output shaft of a stepping motor; and therefore, when the whole device is used, manual bending and pressing are not needed, only simple supporting is needed, the whole device is more convenient to use, the effect is better when the who