[Problems]To provide a surface acoustic wave excitation device for efficiently exciting the surface acoustic wave on the surface of a material such as glass having free size and shape for making mechanical vibration available.[Means to Solve the Problems]The surface acoustic wave excitation device according to the present invention comprises a non-piezoelectric member 30 such as glass, a piezoelectric member 20, interdigital transducers 11 interposed between the non-piezoelectric member 30 and the piezoelectric member 20, and pre-pressurizing means 42 for pressing the piezoelectric member 20 onto the non-piezoelectric member 30 by way of the interdigital transducers. Alternating voltage is applied to the interdigital transducers 11 for exciting the surface acoustic wave on the non-piezoelectric member 30. Standing waves are generated in the piezoelectric member 20 by applying alternating voltage to the interdigital transducers 11, thereby allowing alternating strains to propagate to the non-piezoelectric member 30 such as a glass substrate or the like by way of the electrodes 11 and exciting the surface acoustic wave for making mechanical vibration of the non-piezoelectric member 30 available.