To provide a photo-electric device for closing an elevator door capable of sensing an object as obstacle for closing the elevator door existing near a car floor 8 or a hall floor 2.

The photo-electric device for closing the elevator door is structured so that the light from projectors 13 installed at the doorways 3 and 9 of an elevator is reflected by the car floor 8, and is equipped with a reflected light hindering means to hinder the reflected light from being received by a light receiver 14. One embodiment of this reflected light hindering means consists of light shutoff plates 21 and 31 provided with through holes 22 and 32 in the shape of long hole directed vertically, and the plates 21 and 31 are installed on the front face of a light emitting element 13p or a light receiving element 14r so as to hinder the element 13p from being irradiated with the reflected light from the surface of the car floor 8. Another example of the embodiment of the reflected light hindering means has such a structure that a floor material subjected to a delustering treatment is laid on the car floor 8 in the part of the doorway 9.