The cutter head of a dredger is one of the core working components of a cutter suction dredger, responsible for cutting and churning the underwater sediment and rocks. After mixing the soil with water, the mud-water mixture is then suctioned out through a mud pump, via the ship's intake pipes, mud pump, and discharge pipes to the unloading site, thereby completing the dredging operation. To ensure continuous cutting performance of the cutter head while reducing wear rate, the design of the cutter head features spatially twisted three-dimensional spiral blade arms. This spiral blade design allows for a continuous cutting process throughout.