The invention discloses an axial electrical excitation composite rotor circumferential misplacement reluctance motor control system and method, and belongs to the technical field of electrical appliance automatic control. The axial electrical excitation composite rotor circumferential misplacement reluctance motor control system comprises a DSP (Digital Signal Processor), a position sensor, a speed sensor, a current sensor, a level reversion chip, a three-phase asymmetrical half-bridge power converter, a driving circuit and the like. A controlled motor comprises a motor revolving shaft, a magnetic conductive material, a central electric excitation coil, a stator salient pole, a rotor salient pole and the like. The method comprises the following steps: generating a new PWM (Pulse-Width Modulation) duty ratio according to data transmitted by the position sensor, the speed sensor and the current sensor through the DSP; and adjusting current of a three-phase winding or adjusting current of the electric excitation coil. The electric excitation coil is arranged between two groups of stators, and a rotor circumferential misplacement structure is adopted for running, so that crest connection of torque between two sets of stators and rotors is realized effectively. Double-closed-loop PI (Proportional-Integral) control is adopted, so that the dynamic response speed and interference resistance of the control system are improved greatly, and efficient continuous speed adjustment control of a motor can be realized easily.