Cutter suction dredge is widely used in dredging project. It makes use of a cutter head equipped around the front of the water suction tube to loosen and cut the mud to be dredged. It pumps the dredged material via the mud flowing pipeline to the pile. The digging, translating and discharging progress can be carried out at the same time. It’s of high work efficiency and low costing. Cutter suction dredge is a good choice for underwater dredging. It is easy to operate, move and strong to adapt. It is used the hydraulic system. front-end suction pipe installed around the rotary cutter suction tube device, the river sediment for cutting and stirring, and then by suction Mud tubes will be twisted from the sediment material, with a strong pump power, transmitted to the accumulation of sediment material field, its dredging, mud, mud-dumping working process, you can complete a row, it is a high efficiency, the lower the cost of dredging is a good underwater excavation machinery.