In order to improve the driving capability of rotary traveling wave ultrasonic motor stator and prolong working life of the motor, a kind of stator with radiant panel was designed. According to the connection between the radiant panel and substrate, the stator was divided into 5 structures, such as a, b, c, d and e. The finite element simulation model of the stator was established by using the ANSYS software to perform the modal analysis and harmonic response analysis. On the basis of a comparison between the five structures, the three parameters of the stator structures, such as the radiant panel groove width of w, the external diameter of d and the thickness of t, were optimized by taking the optimal output performance as objective function. The best structure of the stator is a, that is, the connection length between the radiant panel and substrate is 1 mm, the optimal dimensions are w=1.8 mm, d=72 mm, t=0.5 mm. This optimized results provide referenced dimensions for the manufacturing process of the rotary traveling wave ultrasonic motor stator.