To　improve　fire　resistance　and　thermal　insulation　performance　of　composite　wall,　composite　wall　of　cold-formed　steel　and　tailing　microcrystalline　foam　glass　slab　(CFS-TS　composite　wall)　was　proposed,　which　was　composed　of　cold-formed　steel　and　tailing　microcrystalline　foam　glass　slab　(TMFGS).　CFS-TS　composite　wall　can　fill　fly　ash　blocks　between　cold-formed　steel　keels　to　improve　its　thermal　insulation　and　mechanical　performance.　To　study　the　compression　performance　of　CFS-TS　composite　wall,　compressive　tests　of　4　composite　walls　were　carried　out　to　investigate　the　influences　of　the　thickness　of　cold-formed　steel,　the　strength　of　TMFGS,　and　the　addition　of　fly　ash　block　on　the　failure　characteristics,　bearing　capacity,　and　deformation　capacity　of　specimens.　Finite　element　numerical　simulation　was　conducted　to　clarify　the　influence　of　different　parameters　on　the　bearing　capacity　and　failure　mode　of　the　composite　walls.　Simulation　results　had　good　agreement　with　the　experimental　results.　The　research　shows　that　CFS-TS　composite　wall　was　under　axial　compression　at　the　early　stage　of　loading　and　under　eccentric　compression　at　the　later　stage　of　loading.　When　the　specimen　reached　the　ultimate　load,　buckling　failure　occured　in　the　cold-formed　steel.　The　thickness　of　the　cold-formed　steel　has　a　great　influence　on　the　bearing　capacity　of　the　specimen.　Increasing　the　thickness　of　the　cold-formed　steel　can　improve　the　stability　of　the　specimen.　Increasing　the　strength　of　the　TMFGS　can　slow　down　the　damage　and　improve　the　bearing　capacity　of　the　composite　wall.　When　specimen　was　added　with　fly　ash　block,　cold-formed　steel,　TMFGS,　and　fly　ash　block　had　good　working　performance　with　each　other,　and　the　compressive　performance　of　the　specimen　was　significantly　improved.　The　section　form　of　filling　fly　ash　block　is　suggested　to　be　used　in　the　engineering　application　of　CFS-TS　composite　wall.　©　2019,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.