The circulation, tide and tide current in the Bohai Sea, Yellow Sea and East China Sea were relatively successfully simulated by POM (Princeton Ocean Model). Then after the governing equation of suspended matter transport was added into POM, and with due consideration of the mechanism of the sedimentation and re-suspension, the transport, dispersion, sedimentation and erosion of suspended matter affected by circulation and tide current were simulated. Simulated results on the temporal and spatial distribution of total suspended matter concentration revealed and further proved that the seasonal characteristics of suspended matter transport were: storage in summer and autumn; transport in winter and spring in the East China Seas. Shelf circulation has crucial influence on long-term suspended matter transport. The finer the grain size of suspended matter was, the farther it dispersed. The simulated distribution of surface sediment accorded with that measured; and the simulated settling velocity on the mud off Zhejiang coast is similar to the measured. The calculated result of suspended matter exchange showed that net flux of suspended matter from the Yellow Sea to the East China Sea was 5.0×107 tons every year, especial autumn and winter; the net flux from the Bohai Sea to the Yellow Sea was 1.5×107 tons every year, about 2% of total suspended matter derived from the Yellow River.