In order to better analyzing emerging the Yangtze River Delta region’s main ports competition of foreign trade container source,under the condition of port hinterland partly overlapped,we establish a more adaptable exponent network flow assignment to find out the minimum freight according to the hinterland container transport network which is on the basis of the harbor oriented parameter.Based on this theoretical research,we obtain the container flow assignment model which is more suitable for the development of ports in the Yangtze River Delta region.We also provide a more effective forecasting method for the prediction of the foreign container throughput of major ports in this area.