To inexpensively provide a test device and method capable of sharply reducing adjustment time for performing a test wherein a test load exceeding an allowable range of a piezoelectric vibrator is applied.

A first transmission member 63 is coupled to a stepping motor 53 so as to move in the direction of a double-headed arrow S1 in response to the rotation of the stepping motor 53. A second transmission member 64 is provided on the more first fixing implement 17 side than the first member 63, and to the member one end, in the vibration direction and on a side separate from the first implement 17, of the piezoelectric vibrator 15 is fixed. A third transmission member 65 is fixed to both the first member 63 and the second member 64. A joint 66 is detachably fixed to the other end of the piezoelectric vibrator 15 and the third member 65, and moreover fixed to a coupling piece 67.