Through an analysis of a three-phase winding, star-connected full-controlled bridge circuit, introduces the working principle of the counter rotating permanent magnet BLDCM. According to the internal mathematical model of permanent magnet brushless DC motor, establishes the mathematical model of the counter rotating permanent magnet BLDCM, and gives the modeling and simulation of the motor body module, commutation module and inverter module by Matlab / Simulink. The simulation results show that the theoretical analysis and experimental results are in full compliance.