Abstract: The research on integrated radio frequency (RF) system can be originated in the 1980 s and 1990 s, and is developed with the development of operational requirements and electronic devices, which is especially suitable for platforms such as ship and airborne. The integrated RF system has typical features such as functional integration, software and hardware universality, high integration and collaborative efficiency, which not only meets the needs of platform equipment, but also meets the requirements of joint combat missions. The integrated RF system is a research focus in the current RF field and one of the future development trends of RF systems, with good application prospects. A comprehensive and in-depth research and analysis of the integrated RF system is conducted from multiple aspects such as development history, system architecture, key technologies and future development directions, hoping to provide reference for relevant research.