The invention discloses a linear piezoelectric motor, which comprises a base, a stator and a slide block, wherein the bottom of the slide block is supported by a bearing. The linear piezoelectric motor is characterized in that the stator is an annular stator and comprises a ring metal block and a ring piezoelectric ceramic; the metal block is provided with a metal driving angle propped against the slide block; the piezoelectric ceramic is provided with 4m subareas at equal intervals along the circumference, wherein the m is a positive integer, every two adjacent subareas form a group of electrodes and have the same polarization direction, and the polarization directions of the adjacent two groups of electrodes are opposite; the metal driving angle is arranged on any one group of electrodes; and half of all the subareas of the piezoelectric ceramic are connected with an excitation voltage, and the subareas connected with the excitation voltage are arranged at intervals along the circumference of the piezoelectric ceramic. Compared with the prior art, the stator is provided with the metal driving angle so as to break through the symmetry of the stator; because of the breakage of thesymmetry of the stator, the resonance frequency of two out-of-plane bending vibrations of the stator with the same order have certain difference; and the stator can be directly driven only through a single-phase power supply, and a driving circuit is simpler.