The invention discloses a noise power generating device based on a micro-perforated panel structure and relates to the technology of reducing noise and the technology of energy harvesting. The noise power generating device based on the micro-perforated panel structure comprises a micro-perforated silicon wafer, an electricity-conducting support, sensitive piezoelectric films, extraction electrodes and a film supporting body. The micro-perforated silicon wafer is of a sound adsorbing noise lowering structure. The electricity conducting support can not only form a cavity needed by a resonance sound absorption structure but also serve as a structure being connected with electrodes on the piezoelectric films. The lower portion of the silicon wafer is provided with the piezoelectric films. On the one hand, the silicon wafer closes a resonant cavity, and on the other hand, the suspended piezoelectric films above the silicon wafer can continuously vibrate under the action of sound waves and generate polarization charges. In addition, the polarization charges can be collected through an upper layer of film electrodes and a lower layer of film electrodes. According to the noise power generating device based on the micro-perforated panel structure, micro-mechanic electronic process technology is applied, and the silicon wafer is made into the micro-perforated panel structure so as to lower noise. In addition, acoustic energy contained by the noise serves as an energy source of energy harvesting devices, the acoustic energy is converted into electricity, and therefore noise lowering and power generation are mutually promoted. The noise power generating device based on the micro-perforated panel structure has the advantages of being simple in structure and capable of being prepared in batch.