Being consistent with the spatial distribution of geomorphological states, the wave energy of the nearshore increases from the northern zone to southern zone and the boundary between sand and mud extended from the five meter isobath of the north to the deeper water zone of the south. Use of a probability model of sand size parameters to analyze sediment longshore transport trends in different sections and clepthes of the shore, showed that a bi-direction movement trend exists under normal wave condition, and the primary trend of the sand longshore transport is southwestward. Under high energy condition, there is a northward sand movement along the northern section of the coast.