River channel dredging device and dredging method

The invention discloses a river channel dredging device and a dredging method, and belongs to the technical field of river channel dredging. The river channel dredging device comprises a dredging ship body, a salvage assembly arranged at the bottom of the dredging ship body and used for separating sundries and sludge in a river channel sludge layer, a sludge suction assembly arranged on the dredging ship body, communicated with the salvage assembly and used for sucking away the sludge separated from the salvage assembly, a sundry treatment assembly which is arranged on the dredging ship body, communicates with the salvage assembly and is used for treating sundries separated from the river channel sludge layer, and a sludge treatment assembly which is arranged on the dredging ship body, communicates with the sludge suction assembly and is used for treating sludge discharged from the sludge suction assembly. The river channel dredging effect can be better. 本申请公开了一种河道清淤装置及清淤方法，属于河道清淤的技术领域，其中，一种河道清淤装置包括：清淤船主体、设在清