There is disclosed a piezoelectric/electrostrictive device being less-particle-generative and capable of continuously realizing a stable displacement operation over a long period of time or being large in displacement amount and high in generative force and the like. This less-dust-generative piezoelectric/electrostrictive device 1 comprises a plurality of piezoelectric/electrostrictive elements 31 including a plurality of piezoelectric/electrostrictive members 4 and at least one pair of electrodes formed on the side surface of each piezoelectric/electrostrictive member 4, and the members are set up on a thick ceramic substrate 2. In this less-dust-generative matrix-type piezoelectric/electrostrictive device 1, a plurality of piezoelectric/electrostrictive elements 31 substantially having pillar shapes are set up in a matrix form. The ceramic substrate 2 is formed integrally with the piezoelectric/electrostrictive elements 31. The side surface of each piezoelectric/electrostrictive member 4 on which the electrodes 18, 19 are formed are formed as a fired, but unprocessed face.