Abstract: Particle tracking, neutron activation tracer sediment technique and formulas of Zhao and Yalin have been used to conduct research on sediment transport in mud-dumping grounds of Huanghua port. Furthermore, through these studies, effect on seaway siltation is analyzed. Results show that the sediment transport is dominated by tidal current under normal weather; nevertheless, under the condition of strong winds,wind wave, tidal current and wind-driven current play important roles in the sediment transport. Sediments from the mud-dumping grounds almost have no direct effect on seaway siltation under a single strong wind. The effect on seaway siltation from the mud-dumping grounds is indirect and limited.