In order to improve the user experience, security, reliability and market support capability of the vehicle control display device of the rail transit, the key technology of interactive display was studied, and the interactive design, the adaptive design and the modular design were carried out. Based on this, a new display platform was proposed, and a new display device was developed, tested and verified. The results showed that the performance of the new display device was superior, and the reliability and user experience could be improved. At the same time, the design of the platform could support more diversified markets, and has a good prospect of engineering application.