Through analyzing performances and testing technology of aircrafts’ load feeling mechanism, and using modern testing theory and technology, hardware structure and software structure of the aircrafts’ load feeling mechanism testing system were designed, and auto testing and judging for performances of load feeling mechanism were realized, then the problem that performances could not be tested was solved. Applying results show that the system is stable, reliable, highly accurate, convenient to using and maintaining, and easy to develop, which can satisfy wants of testing performances of each type of load feeling mechanism.