In　order　to　study　the　ability　to　resist　lateral　force　of　nuclear　shielding　workshop　under　earthquake　action,　the　low-cyclic　loading　tests　of　nine　scaled　composite　shear　walls　with　double　steel　plates　and　filled　concrete　were　carried　out.　This　paper　studied　the　influence　of　several　parameters　such　as　stud　space,　thickness　of　the　palate　and　stiffener　on　initial　lateral　stiffness　of　specimens.　The　results　showed　that　the　initial　stiffness　of　composite　shear　walls　increased　with　the　thickness　of　steel　plates　and　stiffening　rib　setting,　but　the　factor　of　stud　space　had　no　obvious　effect　on　it.　The　calculation　formula　of　initial　stiffness　of　composite　shear　walls　with　double　steel　plates　and　filled　concrete　was　derived　by　using　unit　load　method,　theoretical　hypothesis　and　simplified　precondition.　The　calculation　value　was　consistent　with　the　experimental　value.　Moreover,　the　change　process　of　lateral　stiffness　of　shear　wall　specimens　under　cyclic　loading　was　studied　and　it　was　found　that　the　changing　degree　of　the　stiffness　was　different　in　the　different　stages　of　the　change　process　of　lateral　stiffness.　©　2017,　Editorial　Department　of　Journal　of　Hunan　University.　All　right　reserved.