According to the complex structure characteristics of the permanent magnet assisted synchronous reluctance motor (PMASRM), the process of parameterization and geometric model establishment was introduced based on the ANSYS Maxwell 2D software platform, and the structural parameters were optimized. Furthermore, the specific procedures of using maximum torque per ampere (MTPA) control strategy in constant torque region and field weakening control in constant power region to get motor voltage, current, internal power factor angle and torque were illustrated in detail. It provides a more practical analysis method for the design of the same kind of motor.