Dredging device for ecological management of river channel

The utility model relates to the field of desilting devices, and particularly discloses a river channel ecological management desilting device which comprises a spiral desilting machine, the outer side of the spiral desilting machine is sleeved with a limiting lantern ring, the surface of the limiting lantern ring is in threaded connection with a clamping screw rod to clamp the spiral desilting machine, a connecting frame is arranged on the outer ring face of the limiting lantern ring, and a transverse rod is arranged on the surface of the connecting frame. The transverse rod penetrates through the penetrating opening which is formed in the surface of the supporting column. The base plate is arranged at the bottom end of the supporting column, a sleeve is arranged on the surface of the base plate, and an extending supporting rod is screwed into the sleeve; the dredging device has the advantages that the spiral silt remover slides down along the limiting lantern ring after inclining and drives the limiting lan