In order to meet the requirements of wide coverage, large bandwidth, low latency data communication services, lightweight equipment and low power consumption in unmanned cluster operations, the design of ultra-lightweight 5G integrated base station is carried out. The composition block diagram of 5G integrated base station is given, and the key designs such as lightweight core network, large uplink subframe ratio, lightweight structure, low power consumption and heat dissipation are proposed. The results show that the design can realize the military application of 5G communication technology and improve the information communication and battlefield survivability of the deployed combat platform.