Device capable of reducing false alarm rate of smoke detector

The utility model relates to a device capable of reducing the false alarm rate of a smoke detector, which comprises a detector labyrinth and an alarm device, a first transmitting tube, a second transmitting tube and a receiving tube are arranged on the detector labyrinth, and the receiving tube is arranged between the first transmitting tube and the second transmitting tube and electrically connected with the alarm device. Included angles between the optical axis of the receiving tube and the optical axis of the first transmitting tube and the optical axis of the second transmitting tube are acute angles, and the optical axes of the receiving tube and the first transmitting tube and the second transmitting tube are located on the same plane, and a first sensitive area corresponding to the first transmitting tube and the receiving tube and a second sensitive area corresponding to the second transmitting tube and the receiving tube are arranged in the detector labyrinth. When foreign matters are sensed in the f