In order to prevent people from being pinched when the elevator closes, a door closing safety device is installed on the car door. Common anti-pinch safety devices include safety touch panel, infrared light curtain and ultrasonic monitoring device. The elevator landing door is stuck. Generally, there are the following situations: 1, the elevator landing door closes too fast; 2. The safety contact plate, infrared light curtain and ultrasonic monitoring device of the landing door are damaged or artificially stolen; When passengers enter the carriage, they use their hands, feet, bodies, sticks, trolleys, etc. Stop the door closing action directly, resulting in artificial damage to the landing door system.