An elevator door control device, which controls the opening/closing operation of a door panel which opens and closes an elevator entrance in the right-and-left direction, comprising: a position switch which detects that the door panel lies at the full open position or at the full close position; a first light transmitter provided on the position switch to transmit a first light beam; a first light receiver provided at a position opposed to the first light transmitter on the position switch to receive the first light beam; a second light transmitter provided on the position switch to transmit a second light beam; a second light receiver provided at a position opposed to the second light transmitter on the position switch to receive the second light beam; a first shield plate and a second shield plate, which are provided on the door panel; and a door control device body which judges, based on a signal carrying information about the light receiving state of the first and second light receivers (16a, 16b) outputted from the position switch, whether or not the door panel lies at the full open position and the full close position and which controls the opening/closing operation of the door panel, whereby when the door panel lies at either one of the full open position and the full close position, the first shield plate shields one or more predetermined light beams of the first and second light beams (17a, 17b), and when the door panel lies at the other of the full open position and the full close position, the second shield plate shields one or more predetermined light beams of the first and second light beams (17a, 17b) different from the predetermined light beams shielded by the first shield plate. a position switch which detects that the door panel lies at the full open position or at the full close position; a first light transmitter provided on the position switch to transmit a first light beam; a first light receiver provided at a position opposed to the first light transmitter on the position switch to receive the first light beam; a second light transmitter provided on the position switch to transmit a second light beam; a second light receiver provided at a position opposed to the second light transmitter on the position switch to receive the second light beam; a first shield plate and a second shield plate, which are provided on the door panel; and a door control device body which judges, based on a signal carrying information about the light receiving state of the first and second light receivers (16a, 16b) outputted from the position switch, whether or not the door panel lies at the full open position and the full close position and which controls the opening/closing operation of the door panel, whereby when the door panel lies at either one of the full open position and the full close position, the first shield plate shields one or more predetermined light beams of the first and second light beams (17a, 17b), and when the door panel lies at the other of the full open position and the full close position, the second shield plate shields one or more predetermined light beams of the first and second light beams (17a, 17b) different from the predetermined light beams shielded by the first shield plate.