Elevator door safety device

The utility model discloses an elevator door safety device, which relates to the technical field of elevator protection devices and comprises an elevator main body, an elevator door is arranged on the inner side of the elevator main body, an anti-pinch mechanism is arranged on the outer side of the elevator door, an emergency oxygen supply mechanism is arranged in the elevator main body, and the anti-pinch mechanism comprises a soft protection shell. Through the cooperation among the reaction tank, the movable tank, the reaction box, the sliding reaction block, the manganese dioxide reaction block, the transverse plate, the reset spring and the push rod, when the elevator breaks down and internal oxygen is lacked, the push rod is pushed to slide along the movable tank, the sliding reaction block slides towards the bottom, and through the cooperation with the effect of the transverse plate, the reaction effect is improved. When one end of the sliding reaction block enters hydrogen peroxide contained in the rea