：　In　the　offshore　engineering　platform　tower　structures，circular　double　steel　tubes　are　the　main　load-bearing　members，and　the　compressive　and　corrosion　resistance　behavior　is　a　great　concern　to　design　engineers.　In　order　to　study　the　axial　compressive　behavior　of　mortar-filled　double-skin　stainless　steel　tubular　stub　column，a　set　of　twelve　column　specimens　was　designed　using　the　outer　stainless　steel　tube　wall　thickness，the　inner　carbon　steel　tube　diameter　and　the　mortar　between　two　steel　tubes　as　test　variables.　The　failure　modes，load-displacement　curves，bearing　capacity，deformation　performance　and　strain　characteristics　were　analyzed，and　the　influences　of　different　parameters　on　the　ultimate　bearing　capacity　were　studied.　The　results　show　that　the　failure　modes　of　the　specimens　are　the　local　buckling　failure　at　the　end　or　middle　of　the　outer　steel　tube.　With　the　increase　of　the　wall　thickness　of　stainless　steel　tube，the　bearing　capacity　increases　linearly.　Infilled　mortar　can　effectively　improve　the　bearing　capacity，　reduce　the　deformation　of　the　outer　steel　tube，and　improve　the　ductility　of　the　specimens.　For　the　specimens　with　infilled　mortar，the　bearing　capacity　decreases　with　the　increase　of　hollow　ratio，while　for　the　specimens　without　mortar，the　bearing　capacity　increases　with　the　increase　of　hollow　ratio.　According　to　different　design　codes　and　theoretical　formulas　proposed　by　other　scholars，the　calculated　ultimate　bearing　capacity　and　test　results　were　compared　and　analyzed，and　the　design　suggestion　was　proposed.　©　2024　Tongji　University.　All　rights　reserved.