A piezoelectric sensor including a substrate, an electrode array, a plurality of flexible piezoelectric material layers, and at least a pair of spacers. The electrode array is disposed on the substrate. The plurality of flexible piezoelectric material layers are laminated to each other on the electrode array. The spacers are respectively disposed at the two opposite sides of the electrode array and disposed between two adjacent flexible piezoelectric material layers.一種壓電感測器，其包括基板、電極陣列、多個可撓性壓電材料層和至少一對間隔物。電極陣列設置於基板上。多個可撓性壓電材料層相互疊層於電極陣列上。間隔物分別設置於該電極陣列的相對兩側和相鄰的兩個可撓性壓電材料層之間。
