Provided is a piezoelectric driving device 100 for a motor 101 including: a vibrating plate 40 which includes a fixed portion 42 and a vibrator portion 46 in which a piezoelectric element 50 is provided and which is supported by the fixed portion; and a contact portion 60 which comes into contact with a driven body 2 and transmits motion of the vibrating plate to the driven body, in which the fixed portion, the vibrator portion, and the contact portion are provided along an X direction in this order, when seen in a Y direction, when two directions parallel to a main surface of the vibrating plate and orthogonal to each other are set as the X direction and the Y direction and a direction orthogonal to the main surface of the vibrating plate is set as a Z direction.