Trimming teeth, Ushaped teeth and flange teeth based on 12slot/10pole flux switching permanent magnet motor (FSPMM) was proposed to reduce effectively cogging torque and torque ripple. The 2D finite element method analyzed and evaluated torque characteristics of different novel teeth from average electromagnetic torque, cogging torque, torque ripple. The results verify that the proposed three novel tooth shapes, especially rotor with Ushaped teeth and rotor with flange teeth, could effectively reduce cogging torque and torque ripple at only slight reduce in the average electromagnetic torque.