In order to increase the value of the phrase transition on the regular network, which can be used to measure the capacity of network to process traffic flow, firstly we propose a simple model for traffic network based on randomly choosing the shortest path and further investigate the value of the phrase transition from the free phrase to congested phrase in the regular network. And then, four different routing strategies are presented and discussed. Actually, the better routing strategy can strongly enhance network capacity and obtain relatively less traffic flows delivery time without changing the structure of networks; therefore, itpsilas beneficial for decision-making in modern traffic networks.