The utility model provides a gantry crane cable buffer stop, including its characterized in that lift railing and photoelectric switch, photoelectric switch with the lift railing is connected, photoelectric switch is located the orbital inboard of hoist. At orbital road junction installation lift railing, stop the vehicle through the lift railing, it is effectual to stopping of vehicle, after the hoist passed through the road junction, the cable blocked photoelectric switch, and personnel's operation has been removed from to lift railing automatic start, has guaranteed the warning effect to the vehicle simultaneously.