Cluster analysis and Gao-Colliins particle size trend analysis model will be used in sediment characteristics and transport of Yangtze Delta 948 surface sediment samples. The results showed that: Changjiang Estuary sediments can be divided into three categories. The first class of sediments composed mainly of silt

these are mainly distributed in the Yangtze Delta southeast 10 m depth contour to 40 m isobath range. The second category mainly silty sediment sand

sandy silt

mainly distributed in the waters east of Qidong between 20 to 40 m bathymetric contour. Yangtze River estuary sediment transport in the overall trend can be broadly divided into two directions toward the estuary of northeast and the coast of south. North branch of the Yangtze River near the exit of the sediments have a tendency to transport within the estuary. North branch of estuary sediments isobath 20~40 m between the transport to the northeast. Southern branch outlet affected runoff

coastal streams south transport part

the other part shelf seaward transport and counterclockwise turn to the northeast in the 10 m isobath sediment transport trends section

in the northeast corner of the study area there is transport to the estuary of the trend shelf.