Dredger capable of crawling

The utility model discloses a dredger capable of crawling. The dredger capable of crawling comprises a dredger body, at least one positioning pile, a bucket and a bucket power device. The positioning pile is hinged to the tail portion of the dredger body by using a perpendicular face as a rotation face, and the positioning pile can stretch and retract in the axial direction of itself. A perpendicular face is used by the bucket power device as a rotation face. One end of the bucket power device is hinged to the head portion of the dredger body, and the other end of the bucket power device is hinged to the bucket. A perpendicular face is used by the bucket as a rotation face, and the bucket can extend to below the dredger body through the bucket power device. The dredger capable of crawling has the advantages of being capable of achieving crawling in a complex working environment without the need of other auxiliary equipment such as a crane, capable of achieving motions of automatically entering water and automatically landing and the like, and capable of achieving walking and replacing the functions of a device such as a propeller through crawling when the dredger is located in shoal waters or sludge areas where the dredger body cannot be driven by the propeller to walk or be dragged by traction of a tug.