This paper introduced how to realize the man-machine interaction interface of the automatic driving system of the domestic HX,D,1 locomotive, so as to achieve the purpose of communication between the automatic driving system and the driver. The specific implementation method of automatic driving information display was presented. Different contents were displayed according to the function division area. By displaying color collocation and voice technology interacting with the driver, the man-machine interaction obstacles in the operation of the automatic driving system were eliminated, and the smooth and safety operation of the train was ensured.