Some　finite　element　models　are　developed　for　composite　shear　walls　with　double　steel　plates　and　filled　concrete　(SCSW)　using　finite　element　software　ABAQUS,　which　are　typical　prototypes　for　nuclear　island　structure.　This　paper　investigated　the　seismic　behavior　of　SCSW　under　the　complex　stress　state　of　vertical　loading　and　horizontal　loading　based　on　finite　element　analysis　and　tests.　The　effects　of　parameters,　such　as　stud　space,　the　thickness　of　steel　plates,　concrete　strength,　vertical　loading　and　shear　connector　on　the　seismic　behavior　of　SCSW,　are　analyzed.　The　results　show　that　it　is　more　effective　on　seismic　performance　of　shear　wall　specimens　to　set　stiffener　in　same　conditions　of　increasing　the　same　steel　content.　Finally,　this　paper　compares　the　results　of　the　finite　element　calculation　and　test　results　on　ultimate　capacity　and　it　is　found　that　both　of　them　have　a　good　agreement.