Two kinds of driver brake controller used on HXD electric locomotive, i.e. time-based brake controller and position-based brake controller were introduced, the structural characteristics and the working principle of which were focused on. Time-based brake controller was a kind of indirect brake controller with brake force decided by time, which could realize minimum brake application, maximum brake application, and emergency brake and so on conveniently and reliably. Position-based brake controller included an indirect brake controller and a direct brake controller with brake force decided by the position of the handle such as run, minimum brake position, maximum brake position, suppression position, multiple unit position and emergency brake position etc, and it has nice functionality and reliability.