The invention belongs to the technical field of railway vehicle equipment, and particularly relates to an induction type electrically-driven sliding door device for railway vehicles, wherein the upper end of a glass door panel is connected with a drive carrying device through a door carrying frame device, and the lower end of the glass door panel is matched with a bottom guide device; an electromechanical locking mechanism, a door controller, a driving motor, a magnetic door stop, a railway baffle and a power-off device are fixedly mounted on a carrying railway in sequence; a belt pulley at one lateral end of the carrying railway is mounted on the driving motor, and another belt pulley at the other lateral end of the carrying railway is flexibly mounted on the carrying railway; a toothed belt is mounted on the two belt pulleys in a circular sleeved manner; a belt transmission device is mounted on the toothed belt; a induction device is mounted on a vehicle body inner plate; a switch is fixedly connected with a bracket through a switch support plate; a cam and a camshaft are connected into a whole and mounted on the bracket; a spring is mounted on the camshaft in a sleeved manner; and a spring clip on the switch is contacted with the cam. The induction type electrically-driven sliding door device has simple structure, mature technology and excellent electrically-driven performance, is safe and reliable to use, and is environment friendly.