Piezoelectric film sounding structure and piezoelectric film sounding device

The invention discloses a piezoelectric film sound production structure and a piezoelectric film sound production device, and belongs to the technical field of piezoelectric sound production. The invention provides a piezoelectric film sound production structure, and the structure comprises a supporting layer which forms a cavity; the piezoelectric material layer is located on one side of the supporting layer and covers the cavity; the first electrode is located on the first side of the piezoelectric material layer and located in the cavity; the second electrode is located on the second side, opposite to the first side, of the piezoelectric material layer and is arranged opposite to the first electrode in the stacking direction; and the protective layer is positioned on one side, far away from the piezoelectric material layer, of the second electrode. According to the piezoelectric film sound production structure provided by the invention, the first electrode is arranged in the cavity, so that the thickness o