The project locates at the northwestern Gantgaw Tanng Kyunn island in the western Myanmar.Based on a great amount of hydrological, sediment and landform analytical data and design schemes for the dock and navigation channel, physical model experiment for tidal current, walk navigation pattern ADCP measurement,wave tide and sediment numerical model, etc. are used to calculate the flow and sediment condition in the sea area near the project, flow pattern in front of the dock and the location of the silt-thrown area for the channel excavation. The results shows that the flow is smooth during the flood or ebb tidal processes, mooring conditions can satisfy the demand of ships; the sediment concentration is low and the construction of the dock is feasible. The silt-thrown in areas A, B and C are safe, economical and reasonable, and it has little influence on the navigable channel.