The　drive　range　of　electric　vehicle　(EV)　is　one　of　the　major　limitations　that　impedes　its　universalism.　A　great　deal　of　research　has　been　devoted　to　drive　range　improvement　of　EV,　an　accurate　and　efficiency　energy　consumption　estimation　plays　a　crucial　role　in　these　researches.　However,　the　majority　of　EV＇s　energy　consumption　estimation　models　are　based　on　single　motor　EV,　these　models　are　not　suitable　for　dual-motor　EVs,　which　are　composed　of　more　complex　transmission　mechanisms　and　multiple　operating　modes.　Thus,　an　energy　consumption　estimation　model　for　dual-motor　EV　is　proposed　to　estimate　battery　power.　This　article　focuses　on　studying　the　operating　modes　and　system　efficiency　in　each　operating　mode.　The　limitation　of　working　area　of　each　mode　ensures　the　vehicle　dynamic　performance,　then　PSO　algorithm　is　adopted　to　optimize　the　torque　(speed)　distribution　between　two　motors　to　improve　the　system　efficiency　in　the　coupled　driving　mode.　Finally,　the　energy　consumption　estimation　model　is　established　by　multiple　linear　regression　(MLR).　The　result　shows　that　the　proposed　model　has　a　high　precision　in　energy　consumption　estimation　of　dual-motor　EV.