Because of the influence of comprehensive hub construction on network flow, this paper adopts the bi-level\nprogramming model (BPM) to solve the problem about the integrated optimization of multi-hub location and\nnetwork layout. The upper level model is designed to minimize the network operating cost, network transformation\ncost, and hub construction cost; the lower level is the user equilibrium distribution model at fixed demands.\nBesides, this paper designs the improved genetic algorithm to solve the bi-level programming model and validates\nthe model validity and algorithm feasibility through the computing example. The model has a high application\nvalue for solving the problem of comprehensive optimization of intercity passenger transport hub location and\nintercity passenger transport network design in the process of urban agglomeration development
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