Bottom mud washing and dewatering ship for bottom dredging of water body

The invention discloses a bottom mud washing and dewatering ship for bottom dredging of the water body, and the ship comprises a ship body, a cutter suction head, a ship-borne mud conditioning system,a screw pump, a ship-borne filter press device and a ship-borne mud storage tank, wherein the cutter suction head, the ship-borne mud conditioning system, the screw pump and the ship-borne rotary filter press are all arranged on the ship body; the cutter suction head is sequentially connected with the ship-borne mud conditioning system, the screw pump and the ship-borne rotary filter press; the ship-borne mud storage tank is movably arranged outside the ship body, and the ship-borne mud storage tank is connected with the mud cake outlet of the ship-borne rotary filter press. The bottom mud washing and dewatering ship of the invention integrates dredging and dewatering and drying, greatly simplifies the dredging and dewatering and drying links of river and lake bottom mud, saves land and energy consumption, and is