Aiming at the problem of complex mechanical structure and low digital level in the traditional driver controllers, a digital driver controller based on MCU was proposed and the corresponding prototype was developed. Non -contact absolute value photoelectric encoder was adopted to detect the position of traction/braking operation handle, and the software control mode was used to replace the traditional cam group control switch mode. At the same time, the RS-485 communication interface was introduced and the touch screen was used as the human-computer interaction interface to facilitate the driver's control. The results showed that the design can simplify the mechanical structure of driver controller and improve its digital level.