Airborne system is developing towards the direction of integration, intelligence and automation. The integration of the system is usually realized by the way of cross-linking of the system. The cross-linking relationship between systems is complex and the number of cables is large, which increases the complexity of the whole airborne system. Requirements for hardware resources of the airborne system are very high, and the contradiction between the high demand for the integrated airborne system and the slow upgrade speed of hardware resources appears. The demand for intelligent airborne systems are also developing. This paper presents a scheme of distributed cloud-edge-terminal intelligent architecture for airborne system, which combines cloud-edge-terminal technology, distributed network control technology, distributed integrated modular avionics system technology, and is reasonably constructed through cloud management platform, edge control platform and terminal platform, and configures high-speed secure real-time network and container software technology. Without increasing the complexity of the whole aircraft, the integration of multi-airborne systems can be improved. At the same time, the architecture can also meet needs of the application of new technologies such as artificial intelligence, information fusion, large data processing and the expansion of new functions. This architecture provides a solution for the future integrated and intelligent development of airborne systems.