Dual-winding　bearingless　flux　switching　permanent　magnet　motors　(BFSPMM)　are　doubly　salient,　the　magnetic　field　distribution　of　the　motor　will　be　more　complicated　when　the　rotor　is　eccentric.　A　subdomain　model　method　considering　the　rotor　eccentricity　of　dual-winding　BFSPMM　is　proposed　in　this　paper　to　analyze　the　electromagnetic　characteristics　of　the　rotor　eccentricity　with　slots　on　both　sides　of　stator　and　rotor.　Based　on　retaining　the　original　polar　coordinates　at　the　geometric　center　of　the　stator,　a　new　polar　coordinate　system　is　established　at　the　geometric　center　of　the　rotor.　The　Laplace　and　Poisson　equations　of　each　subdomain　are　established　in　two　different　coordinate　systems　respectively.　In　the　developed　model,　the　entire　air　gap　area　is　divided　into　the　non-uniform　and　uniform　air　gap　area.　The　electromagnetic　parameters　under　the　condition　of　rotor　eccentricity　are　analyzed,　such　as　flux　density,　back-EMF,　and　suspension　forces.　The　analytical　model　are　verified　through　the　finite　element　method　(FEM)　and　prototype　experiment.　©　2022　IEEE.