Switched reluctance motors (SRMs) are used in many fields, but due to the structure, they have greater vibration and noise than other traditional motors. Therefore, suppressing the vibration of SRM is still a hot area of research. In order to suppress the vibration of the motor, a new type of motor structure is designed, for which holes are punched on both sides of the rotor and the stator tooth top is slotted. Taking a 7.5 kW, 1 500 r/min, 12/8 poles SRM as an example, through the finite element analysis and simulation, the new motor structure is parameterized and the optimal structure is obtained. Under the condition that the average torque remains basically unchanged, the torque ripple and radial force are reduced. The torque ripple coefficient is reduced by 16.01% and the peak radial force is reduced by 19.96% compared with the original motor. Therefore, it is proved that this method has a good effect on the vibration suppression of the SRM. It has a certain referential significance to the design and control of the SRM.