An eco-friendly cutter head is installed on the dredger, a new type of cutter that can remove underwater polluted sediment with high precision while causing minimal disturbance to the surroundings. When the dredging depth changes, the cutter level regulator ensures the cutter remains horizontal. During dredging, the bottom edge of the cutter's outer cover is flush with the riverbed, and the cutter sealing cover effectively covers the sediment disturbed by the cutter, which is then fully吸入 by the sludge pump. Eco-friendly dredging reduces the degree of secondary pollution caused by dredging during the construction process.