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According to the fact that original testing equipments for flywheel are low reusability, high maintenance and unable to realize synchronous automatic test, the universal testing system for series kind of flywheel is designed. By analyzing the similarities of function and differences of interface between multiple products in the testing process, the testing software takes advantage of hierarchical structure, abstract factory design pattern and configuration files to improve the adaptability and versatility which accommodate different types of flywheel. Based on test flow table, the auto test scheme is raised to adapt multiple requests for testing. With multi-threaded parallel processing architecture, the resource conflict is solved and consummate parallel test of multiple flywheels. At present, the universal testing software has been widely used in the flywheel production with stable performance and high flexibility. The usage of testing equipment has increased by three times and the test efficiency of flywheel has been greatly improved.