Abstract: A laminated piezoelectric body (10) in which an internal positive electrode (15) and an internal negative electrode (16) are arranged at a predetermined distance from each other in the laminated direction of a plurality of piezoelectric element segments (12), while being arranged so as to be perpendicular to the lamination direction of the plurality of piezoelectric element segments (12). A piezoelectric element segment (12A) has an upper contact portion (29A) that comes into contact with a lower contact portion (28B) of an upper piezoelectric element segment (12B). The upper contact portion (29A) has a central projection (32), which protrudes toward the lower contact portion (28B), in the central portion.