The invention discloses a device for realizing soft stop of a runner wagon of a direct-current drilling machine. The device comprises an electronic anti-collision device which is arranged on an early warning height position of the runner wagon of the drilling machine, wherein a soft stop controller is arranged between the electronic anti-collision device and an electromagnetic eddy current brake on the runner wagon; the soft stop controller is in signal connection with a controllable silicon trigger control unit and a driller controller simultaneously; the controllable silicon trigger control unit is in signal connection with the electromagnetic eddy current brake body through a silicon controlled rectifier; the electromagnetic eddy current brake body is in controlled connection with a winch roller. The invention further discloses a method for realizing soft stop of the runner wagon of the direct-current drilling machine. The device and the method for realizing soft stop of the runner wagon of the direct-current drilling machine disclosed by the invention can be used for effectively lowering the speed of the runner wagon, avoiding great impact caused by braking of the brake plate at the anti-collision height position, protecting the drill and improving the drilling efficiency.