The 5Gsatellite integrated network based on the SDN architecture will be one of the most promising solutions of global coverage and broadband communications. In this integrated network, the key of effective deployment of controllers and gateways lies in improving network reliability and reducing time delay. Although the deployment of the controller and the gateway can be solved independently, the tightly coupled nature of the deployment of the controller and the gateway makes the joint deployment more realistic. This paper analyzes and models the joint deployment of SDN controllers and satellite gateways in 5Gsatellite integrated networks, proposes a joint deployment strategy of controllers and gateways based on maximizing network reliability, and designs a mixed algorithm based on simulated annealing and particle swarm Hybrid. The simulation results show that compared with the existing algorithms such as enumeration algorithm and dual simulated annealing algorithm (SASA), the algorithm proposed in this paper has lower time complexity, and further reduces the average control delay and improves the robustness of the network.