Aiming at the influence of the swing position of the cutter suction dredger on the swing speed and swing force,we derive the swing speed relationship formula and swing force relationship formula,and establish an analytical calculation model about the anchor position coordinates.Combining with the main dimensions and angle parameters of the domestic heavy cutter suction dredger “Tiankun”,we calculate the relationship between the swing speed and the take-up speed of the swing winch,and the relationship between the swing resistance and the take-up force of steel cable respectively under the conditions of different swing widths and long distance anchor,and analyze the influence of the swing anchor position on the swing speed and the swing force in different swing widths.The results show that it is as far as possible to the anchor.When the swing width is large,the frequency of inverted anchor is appropriately increased.According to the working conditions,the swing width is appropriately reduced.