A vibration system is disclosed. The vibration system includes a vibrating diaphragm including a dome part and a suspension part encircling the dome part; a voice coil for driving the vibration diaphragm; and a heat conduction plate located between and connected with the dome part and the suspension part. The heat conduction plate includes a lower surface connecting with the voice coil and an upper surface opposite to the lower surface. The suspension part includes an internal peripheral part connected with the heat conduction plate, the dome part comprises a joint part connected with the heat conduction plate, and the upper surface of the heat conduction plate is at least partially exposed outside.