Abstract: In order to solve the problem of heavy workload and low efficiency of manual compilation of field test sequence, this paper designed and developed the auxiliary generation tool for field test sequence of CTCS-2 train operation control on-board equipment, gave the design principle of field test sequence, analyzed and put forward the functional requirements. According to the functional requirements, the software structure was divided into six functional modules: train operation control basic data management, graphical interface drawing, test case data management, test case execution distance calculation, test sequence generation and test sequence data management. The paper also described the relationship and specific function design of each module in detail, introduced the implementation effect of the software, and compared with the manual field test sequence. The results of comparison show that this tool can effectively reduce the workload of field test sequence compilation and improve the efficiency and effectiveness of field test sequence compilation.