An　innovative　prefabricated　lightweight　steel　composite　frame-sandwich　wall　with　an　enhanced　border　structure　(LSCF-SW),　suitable　for　low-energy　consumption　low-rise　residences,　is　proposed.　Low　cyclic　loading　experiment　were　conducted　to　study　its　seismic　behavior.　The　main　parameters　include　wallboard　border　type　(composite　border,　mixed　border)　and　steel　reinforcement　strength　(HRB450,　HRB500).　One　full-scale　LSCF　specimen　and　four　full-scale　LSCF-SW　specimens　are　prepared,　and　their　seismic　behavior　is　investigated　in　terms　of　failure　mode,　hysteretic　characteristics,　ultimate　bearing　capacity,　stiffness　degradation,　deformation　capacity,　energy　dissipation,　and　strain　characteristics.　The　results　revealed　that　the　sandwich　wall　(SW)　with　an　enhanced　border　and　lightweight　steel　composite　frame　(LSCF)　is　the　primary　and　secondary　seismic　fortification　lines　of　the　structure,　respectively.　The　LSCF-SW　structure　exhibited　a　damage　evolution　process　with　four　stages.　The　failure　mode　involving　concrete　crushing　at　the　bolted　connection　area　is　observed　in　the　specimens　with　composite　bordered　sandwich　walls　(LSCF-SWC),　and　dense　diagonal　cracks　are　discovered　in　the　specimens　with　mixed　bordered　sandwich　walls　(LSCF-SWM).　Compared　to　LSCF-SWC　specimens,　the　ultimate　load　of　LSCF-SWM　specimens　increases　by　23.0　%–50.3　%,　and　the　initial　stiffness　improves　by　16.3　%–42.3　%.　The　deformation　capacity　of　LSCF-SWC　specimens　is　superior　to　that　of　LSCF-SWM　specimens.　As　the　steel　reinforcement　strength　increases,　the　ultimate　bearing　capacity　and　initial　stiffness　of　the　LSCF-SW　also　rise.　A　shear　model　for　the　bolt　group　and　a　local　bending　model　for　the　wallboard　border　are　proposed,　establishing　an　ultimate　bearing　capacity　calculation　method　for　LSCF-SW.　The　calculation　results　closely　align　with　the　experimental　results.　©　2024　Elsevier　Ltd