The radiation head as the final output part of the magnetostrictive transducer has significant influence on the output features of the transducer. The effect of the radiation head on the output features of transducer has been analyzed based on the working mechanism of the transducer and piezomagnetic piezoelectric analogy method with the assistance of ANSYS engineering application software. The results show that, among different types of radiation head, the cuboid radiation head transducer has the lowest vibration frequency and the most significant dynamic displacement; while among different materials of radiation head, 45# steel radiation head has the lowest vibration frequency and the most significant dynamic displacement. Under non resonant low frequency excitation condition, the output of the transducer is a same frequency sine periodical signal; while under resonance condition, the displacement of the transducer is no longer sine wave shape, but the output of its instantaneous displacement has improved significantly, which can reach 25 μm.