The utility model relates to the technical field of power equipment, and particularly discloses a noise reduction accessory with an active noise reduction function and a fixed-line telephone, the noise reduction accessory comprises a cover body, the cover body is used for sleeving the outer side of a receiver; the circuit board comprises a power interface and a noise reduction control circuit which are electrically connected; the microphone is fixedly arranged outside the cover body, is electrically connected with the input end of the noise reduction control circuit and is used for receiving noise in the environment; the noise reduction loudspeaker is fixed to the side, close to the human ear, of the mask body, is electrically connected with the output end of the noise reduction control circuit and is used for making a sound opposite to the sound wave phase of the noise. The utility model provides a noise reduction accessory with an active noise reduction function and a fixed-line telephone, which can effectively solve the problem that a user is difficult to hear the sound in a receiver clearly in a noisy environment.