The cutter suction dredger uses the rotating reamer to loosen the soil at the bottom of the river or the seabed, mix it with cement to form mud, and suck it into the pump body through the suction pipe and send it to the mud discharge area through the mud discharge pipe. During the construction of the cutter suction dredger, dredging, transporting and unloading are all integrated, and it is completed by itself, and the production efficiency is high.