The invention relates to a service bearing method and system for a heterogeneous fusion wireless network. The method comprises the following steps of acquiring network parameters of a wireless networkin service communication requirements; judging whether a service is accessed to the heterogeneous wireless network or not according to the network parameters of the wireless network in the communication requirements; if yes, sending the service to the heterogeneous wireless network by utilizing a heterogeneous wireless network bearing strategy; and if not, ending the operation. According to the technical scheme provided by the invention, heterogeneous fusion is carried out on a power LTE230MHz system network, a power LTE1.8GHz system network and a government enterprise LTE1.4GHz system network, the advantages of different wireless networks are fully utilized, the technical advantages of different wireless networks are exerted, the reliability of network transmission is improved, the service quality of the service is improved, more service access requirements are met, and furthermore, network resource sharing is realized, and great significance is achieved for improving the intelligentlevel of power distribution and utilization.