The embodiment of the invention discloses a background sound processing method, system and device. The method includes the following steps that: a microphone acquires background sound and transmits the background sound to a sound mixing module; the sound mixing module mixes the background sound with music according to a listening mode set by a user setting module so as to generate sound mixed signals, and transmits the sound mixed signals to a receiver; and the receiver receives the sound mixed signals, converts the sound mixed signals into sound signals and plays the sound signals. According to the background sound processing method, system and device provided by the embodiments of the invention, the background sound acquired by the microphone is mixed with the music through the sound mixing module, so that the sound mixed signals can be obtained, and the receiver is adopted to play the sound signals, and therefore, a user can listen to the background sound when using an earphone to perform call communication or listen to music.