Simulating the radiation source of airborne flight platform radar is an important component of building the attack situation of airborne targets. Capable of simulating the real search tracking, and electromagnetic radiation process of radar during aircraft and missile flight. In order to achieve real-time and effective monitoring of the radiation state of radar simulated radiation sources, a microwave signal monitoring device that can be installed inside the airborne platform is designed, The device has a simple structure and occupies a small space ,it is fully suitable for small san compact installation spaces inside the platform. Hardware and software design and implementation is carried out for the signal characteristics of radar simulated radiation sources. The hardware part mainly includes monitoring anpennas, microwave parts, and digital parts. Embedded software that can adapt to the hardware of monitoring equipment is designed and developed, as well as digital display monitoring software that can carry out single machine verification testing and telemetry channel routing analysis of monitoring equipment. After single machine verification of microwave signal monitoring equipment and joint debugging verification with airborne platforms, the microwave signal monitoring equipment works stably and reliably, achieving real-time monitoring and analysis of the output signals of radar simulated radiation sources under low and high voltage working conditions.