Hydraulic engineering desilting device

The invention provides a hydraulic engineering desilting device which comprises a desilting ship body and a sludge collecting tank, a fixing plate is fixedly mounted on one side of the top of the desilting ship body, a pump body is fixedly mounted at the position, located on one side of the fixing plate, of the top of the desilting ship body, and a first fixing frame is fixedly mounted below the other side of the fixing plate. According to the hydraulic engineering desilting device, the desilting ship body, the sludge collecting tank, the first fixing frame, the output pipe, the pump body, the second fixing frame, the input pipe, a fixing pipe, an extraction hopper, a protection box body, a connecting pipe, a filtering steel net, a smashing blade and a second motor are used in cooperation; stone aquatic plants attached to the lower surface of the filter steel mesh can be directly crushed through high-speed rotation of the crushing blades, the crushed stone aquatic plants and sludge can be pumped into a sludge