The overflow through intentional overloading is the most common construction method adopted in the trailing hopper suction dredger (TSHD).It can improve the loading density of dredger,which will lead to a higher dredging efficiency and lower dredging cost.According to the construction characteristics of the overflow through intentional overloading and the regular pattern of sedimentation movement of the solid particles in the liquid,we analyze the applicability of this method in the waterway dredging projects based on the actual projects.