DualStator Permanent Magnet Brushless (DSPMBL) has great application value by itshigh mechanical integration and high torque density. However, DSPMBL can not be designed by current program because of its special structure. Probed into splicing the whole DSPMBL design as two parts design—inside motor&outside motor based on the RMxprt with traditional magnetic circuit method by split ratio of stator. Finally, the model’s performance would be verified by curve of magnetostatic airgap flux density and dynamic simulation.