For the purpse of meeting the needs of modern automobile parts and equipment test, a modular reconfigurable testing system for automobile parts and equipment was carried out. In the testing system, industrial computer as host computer performs human computer interaction, and the client computer is extended based on FPGA(Field Programmable Gate Array). FPGA excutes real-time task that can be configured according to mission requirements. The procedure of modular testing system which was designed with the Microsoft Visual C++ 6.0 is divided into human computer interaction and driver layer. The result showed that the system can be used for rapid design of auto parts and equipment testing system. The result of the present work implied that the reconfigurable testing system has good flexibility and expansibility.