Abstract: In order to achieve high-quality torque output of axial field permanent magnet (AFPM) motors, such as large torque-to-inertia ratio and low torque ripple, the AFPM motor with radial combined PM poles was proposed. By adopting the traditional surface mount PM structure, the PMs and Halbach PM arrays were arranged in a radially staggered pole. The operating principle of the motor was analyzed, and the motor power size equation was deduced. The electromagnetic characteristics, including magnetic field distribution, average torque, torque ripple, back-EMF, and etc. of the proposed and the traditional AFPM motor were compared and analyzed by the 3D finite element method (FEM). On this basis, based on response surface analysis, a multi-objective genetic optimization design method was constructed to optimize the average torque, cogging torque, back-EMF and torque ripple. Finally, a prototype was manufactured based on the optimal parameters, and the experimental research was carried out to verify the validity of the motor structure and the correctness of the theoretical analysis.