And some detail problems are investigated primarily in its application process . traffic situation should be simulated by results of traffic assignment reasonably in network . some methods of parameter study of link resistance and effect of city node are proposed in the thesis 交通分配的结果应能合理地模拟网络中实际的交通流情况,为达到此目的对公路网交通分配中起决定作用的各路段交通阻抗的标定以及城市节点对交通阻抗的影响等提出了一些方法。