Provided is an MEMS piezoelectric loudspeaker. A loading disk and an actuator of the loudspeaker are stacked, such that the loading disk and the actuator do not occupy each other's positions in a transverse direction, and a larger design space can be thus obtained; and with a limited transverse size of the micro loudspeaker, the actuator and the loading disk have a larger transverse area/size and longitudinal vibration displacement, and therefore, the loudspeaker can have a higher output sound pressure.
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