The Inertial Navigation System(INS) testing equipment is developed aiming at self-maintenance and fast testing, so as to improving the whole system maintenance and repairing ability. Based on the Compact PCI bus, after analyzing the testing requirements of the testing equipment, the 32-bit serial code receiving and transferring circuit board and the SXZ circuit board are developed, the relevant driving programs are developed, too. Using LabWindows/CVI, the testing software is developed adopting techniques such as timer, asynchronous timer, threading pool, data protection and minitype database, etc. The developed testing equipment play an important role during the maintenance of the type of airplane, for it's high precision, fast failure diction speed, simple operation, high automatization and easy use and maintenance.