Taking the freeway network as the research object, taking the vehicle route selection with toll road as the main research content, referring to the idea of cumulative prospect theory, selecting the travel time and cost as the reference points, taking the prospect value based on value function and cumulative decision function as the decision basis, the route selection model is constructed. In the part of example analysis, a topological model is constructed according to the freeway network of a province, and the actual toll standard of the road network is taken as the initial parameter value to verify the proposed route selection model. The results show that the setting of parameters has an important impact on the prospect value, and the proposed route selection method for toll roads is effective and feasible. In addition, the influence of rate on route selection is analyzed, and it is concluded that on the route with low travel risk, truck 1 and truck 6 are greatly affected by the toll rate, which can provide decision-making reference for the transportation management department.