According to the test requirements of the advanced military aircraft weapon system, a new weapon system comprehensive inspection instrument is developed by PCI platform and virtual instrument control technology. The tester adopts unique design methods, hardware uses an extended good integration of the PCI industrial computer, also with a variety of adapter circuit of many weapons signal classification and normalization processing and fusion, the software of modular design. The results show that the weapon system is stable and reliable, and the testing efficiency is high, and it has strong practicability and value.