A therapeutic ultrasonic transducer (10) according to the present invention is provided with: a transducer body (1) that has, in the stated order along the longitudinal axis, a first metal body (4), a laminated body (5) 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 (6), and that is formed by integrally fastening the metal bodies (4 and 6) and the laminated body (5) with a bolt (7)； and a heat-radiation means (2) that is connected at a position, on the transducer body (1), serving as a node of an ultrasonic vibration, or in the vicinity of that position. The therapeutic ultrasonic transducer (10) produces an ultrasonic vibration having a frequency of 20 kHz or higher and 100 kHz or lower.
