The invention discloses a magnetostriction longitudinal-tersional compound ultrasonic vibration transducer, which comprises a magnetostriction material piece, an amplitude-change pole, a first electrode slice, a second electrode slice, a coil framework and a coil. The first electrode slice and the second electrode slice are arranged on two ends of the magnetostriction material piece; the second electrode slice is arranged between the amplitude-change pole and the magnetostriction material piece and presses against the amplitude-change pole and the magnetostriction material piece; the first electrode slice and the second electrode slice are electrically connected with the outside, so that an alternating toroidal magnetic field is produced in the magnetostriction material piece; the coil framework sleeves on the periphery of the magnetostriction material piece; the coil winds on the coil framework; the coil is electrically connected with the outside, so that an alternating axial magnetic field is formed in the magnetostriction material piece; and the two magnetic fields are coupled to excite the magnetostriction material piece so as to realize longitudinal-tersional resonance. The magnetostriction longitudinal-tersional compound ultrasonic vibration transducer is simple and compact in structure, and beneficial to realizing a miniature design, the output power and the output amplitude can be increased, and the processing quality and the processing efficiency are improved.