Abstract: Based on the axial switched-flux principle and hybrid excitation technology, a double-rotor hybrid excited axial switched-flux permanent magnet（PM）（DRHE-ASFPM） machine, which is composed of one stator and two same rotors, is proposed in this paper. The salient pole structure is used for the stator/rotor. The stator consists of the double "H" iron core segment and PM. Both the armature windings and excitation windings are coiled in the stator. There are neither windings nor PM in the rotor. Thus, it has short axial length and simple structure. On the basis of inheriting the high power/torque density of the axial field switched-flux PM machine, the flexible flux-adjusting can be achieved in the DRHE-ASFPM machine. In addition, it has strong fault-tolerant capability. Firstly, the best topology and hybrid excitation principle of the DRHE-ASFPM machine were analyzed. The electrical magnetic design philosophy and general design method were investigated. Secondly, according to the 3D magnetic field distribution of the DRHE-ASFPM machine, the 3D finite element（FE） model was established based on 3D FE method. The electromagnetic performance, including air-gap flux density, flux-linkage, back-EMF, torque and flux-regulation characteristics, was analyzed. The electromagnetic parameters were calculated. Finally, according to the analysis and design results, a 600 W prototype was manufactured and the experiment test and analysis were implemented. The experimental results verify the validity of design theory and FE analysis calculation.