A hybrid excitation standing wave linear ultrasonic motor is studied. The relationship between phase difference and velocity is analyzed in detail. ANSYS has been used to establish the finite element model. Modal analysis and harmonic response analysis are carried out to obtain the resonant frequency of the stator and the law of the driving foot’s amplitude varying with the phase. A prototype is made and its phase diffrence-velocity relationship is tested. The results show that the no-load running velocity of the motor decreases with the increase of phase difference. On the premise that the working frequency is 21.9 kHz and the electric field intensity is the same, the maximum no-load running speed of the motor can reach 88.3 mm/s when the phase of the voltage applied to the piezoelectric ceramics on the upper surface is the same as that applied to the piezoelectric ceramics at the end.