Surface acoustic wave resonance device and method for forming surface acoustic wave resonance device

A surface acoustic wave resonance device and a forming method thereof, the surface acoustic wave resonance device comprising: a piezoelectric layer comprising a first side and a second side opposite to each other; the interdigital transducer is positioned on the first side of the piezoelectric layer; and the metal layer is positioned on the second side of the piezoelectric layer. The performance of the surface acoustic wave resonance device is improved. 一种声表面波谐振装置及声表面波谐振装置的形成方法，声表面波谐振装置包括：压电层，所述压电层包括相对的第一侧和第二侧；位于压电层第一侧的叉指换能器；位于压电层第二侧的金属层。所述声表面波谐振装置的性能得到提升。