Abstract: The present invention discloses a sound producing device comprising a housing having a hollow cavity; a first sound producing membrane mounted on the housing, separating the hollow cavity into a first cavity and a second cavity; a main vibration component mounted in the second cavity, separating the second cavity into a main sound producing cavity and a mounting cavity; a first sound outlet hole and a second sound outlet hole in wall portions of the housing; and a driving mechanism in the second cavity. The driving mechanism drives the main vibration component to vibrate, and the vibration of the main vibration component drives the first sound producing membrane to vibrate through the air in the main sound producing cavity; the sound produced by the main vibration component mixes with the sound produced by the first sound producing membrane.