Abstract: This paper studies the problems of how to select the most optimal access network from several heterogeneous wireless networks, and presents an algorithm of heterogeneous wireless network selection based on FAHP.Analysis of the load condition of each optional network is conducted to ensure the network load balancing.Then, a decision model is developed by the analysis of the factors that affect the network selection, the weights of the network properties are respectively calculated from the point of view of user's perspective and overall network management.Finally, the calculated results are integrated for the choice of the optimal network.Simulation results show the correctness and effectiveness of the algorithm.