In order to meet the requirements of small size and high torque piezoelectric motor for precision instruments applications, a new type of low frequency piezoelectricmotor is designed in this paper. The proposed piezoelectric motor has the features of costeffectiveness, low frequency power drive and wider application over high frequency piezoelectricmotor. The driven mechanism of the motor was studied and the dynamic model of the driving structure was established. A prototype was fabricated and tested. The effect of input frequency on output torque and speed were carried out. The tests showed that the new type of low frequency piezoelectricmotor has best operating performance at 290 Hz.