The construction of Yangshan Deep-water Harbor area has a significant impact on the distribution of water and sediment in the surrounding waters,and an in-depth analysis of water and sediment characteristics after the construction of the port is of great significance to the later development of the port area.Based on the Landsat-8 OLI remote sensing image of Yangshan Deep-water Harbor in recent 6 years,we analzye spatial-temporal variation characteristics of surface suspended sediment concentration in Yangshan Deep-water Harbor.The results show that the suspended sediment concentration of waters in Yangshan Deep-water Harbor in winter is obviously higher than that in summer,and the difference between the suspended sediment concentration in winter and summer is nearly once.The suspended sediment concentration in the spring tide is higher than that in the neap tide,and the suspended sediment concentration in the high tide is higher than that in the low tide.Under the influence of the trumpet topography,the tidal current is strong,and the tidal pattern has a more obvious influence on the suspended sediment concentration.