The invention discloses a high-strength focusing ultrasonic therapeutic apparatus, which comprises a combined therapeutic head, an ultrasonic transmitting / receiving host machine, a five-DOF (Degree of Freedom) mechanical arm and a work station, wherein the combined therapeutic head comprises a B-ultrasonic probe and a group of therapeutic probes which are relatively accurately fixed in positions; the combined therapeutic head is connected with the five-DOF mechanical arm; and the work station controls the five-DOF mechanical arm and the ultrasonic transmitting / receiving host machine to work respectively. During the therapeutic process, phase image scanning and adjustment of phase therapeutic position are carried out in an electronic manner, so that two-dimensional B-ultrasonic image cross section is effectively overlapped with high-power ultrasonic beam therapeutic cross section, the accuracy and reliability of therapy and real-time observation are ensured, and the five-DOF mechanical arm is accurate to position and flexible to control; the scan image is more intuitive and clear through three-dimensional reconstruction so as to facilitate subsequent observation and diagnosis; and the therapeutic apparatus is particularly suitable for carrying out noninvasive high-strength focusing ultrasonic therapy on pathological tissues of organs such as glandula mammaria, liver, kidney, uterus, anteprostate and the like.