Clothes airing machine and piezoelectric fan thereof

The utility model provides a piezoelectric fan and a clothes airing machine adopting the piezoelectric fan, and the piezoelectric fan comprises a cover body, a driving circuit and a vibration unit; the cover body is provided with an air inlet and an air outlet; the driving circuit is electrically connected with the vibration unit; the vibration unit is installed in the cover body and comprises a vibration piece and a piezoelectric piece which are fixedly connected, the piezoelectric piece can be driven by a power source to drive the vibration piece to vibrate to form airflow, and the air inlet is formed in the rear side of the free end of the vibration piece in the direction that the airflow flows out of the cover body. The air outlet is formed in the front side of the free end of the vibration piece. By the adoption of the piezoelectric fan and the clothes airing machine, product miniaturization, low power consumption and low noise are facilitated. 本申请提供一种压电风机及采用此种压电风机的晾衣机，其中，压电风机，包括：罩体，驱动电路和振动单元；所述罩体设有进风口和出