A therapeutic ultrasonic transducer including: a transducer body that has, in the stated order along the longitudinal axis, a first metal body, a laminated body in which a plurality of piezoelectric elements are laminated in the longitudinal-axis direction such that their directions of polarization are set in opposite directions in an alternating manner, and a second metal body, and that is formed by integrally fastening the metal bodies and the laminated body with a bolt and a heat-radiation means that is connected at a position, on the transducer body, serving as a node of an ultrasonic vibration, or in the vicinity of that position.
