Abstract: In view of the lack of efficient test cases auxiliary management tools for on-board equipment of train operation control, which brings inconvenience to test demand and test case management, low efficiency of test case preparation, difficulties in test case statistical analysis, this paper designed a test cases auxiliary management tool for on-board equipment of train operation control. In order to improve the efficiency of test case management, the paper established the overall functional framework of the tool, designed and implemented three functional modules of test requirement management, test case auxiliary preparation and management, and test case statistical analysis, constructed an integrated test case management process for test requirement extraction and test case auxiliary preparation and test case analysis. Taking the test case management of CTCS-2 train operation control on-board equipment as an example, the function of the tool was verified. The results show that the tool can manage test requirements and test cases more conveniently, improve the efficiency of test case preparation and test statistical analysis, and reduce the complexity of manual management in the test process.