In order to improve the detection efficiency, a radar frequency synthesizer component test system is designed. The design is based on PXI bus, and there are 3 types of components and 1 power supply module. The driver of the components is developed in LabVIEW. The functions of parameter measurement, data acquisition, fault diagnosis and so on are realized, and the system has good human-computer interaction. The practical application results show that the test system is intuitive and convenient, the measurement error is less than 2%, and the accuracy is greater than 99.The time consumption is shortened by 68.75%, which can greatly improves the test efficiency and test quality and meets the test requirements of radar frequency synthesis combination.