Abstract: Objective: The brake disc serves as the primary carrier of frictional heat throughout vehicle braking process, and its thermal simulation results are crucial reference for brake disc design. To address the issues of low thermal simulation efficiency and high complexity in simulation analysis operation of rail transit brake disc, an interactive parameterized thermal simulation system for rail transit vehicle brake disc is developed using VB language and APDL language. Method: The principles of interactive parameterized BDTS (brake disc thermal simulation) is introduced, based on which the parameter requirements for the interactive interface in the thermal simulation system are determined. Based on a specific vehicle model, the composition of the BDTS system is presented. The brake disc is simulated and calculated using the thermal simulation system. Result & Conclusion: The BDTS system consists of three parts: the interface operation layer, the case implementation layer, and the data operation layer. The temperature deviation between the simulation results of the thermal simulation system and the temperature test results in literature is less than 5%. The simulation time for the BDTS system is 6 minutes, while manual operation with ANSYS software takes 62 minutes. Thus, the BDTS system can greatly improve the simulation calculation efficiency.