A standing wave type ultrasonic motor working on radial vibration mode is studied. Firstly, the structure of the motor is analyzed. Secondly, a finite element model of the stator is built with finite element analysis software ANSYS. The impacts of piezoelectric ceramic structural parameters on the vibration characteristics of the stator are investigated based on the finite element model. The structural parameters of the stator is determined. Transient response of the stator is further analyzed. Finally, a prototype motor is manufactured according to the theoretical results. Experimental tests are conducted on the prototype motor. The test results show that the designed motor has good output performances.