On　the　basis　of　the　proposed　stress-strain　relationships　of　steel　and　concrete　of　concrete-filled　circular　steel　tubes　(CFCST)　at　each　stage　of　fire　exposure,　fully　coupled　thermal-stress　analysis　model　in　finite　element　soft　ABAQUS　was　developed　to　predict　the　load-deformation　relationship　curves　of　axially　loaded　CFCST　stub　columns　after　exposure　to　ISO-834　standard　fire.　The　predicted　results　were　in　good　agreement　with　test　results.　The　finite　element　analysis　model　was　then　used　to　investigate　the　behavior　of　CFCST　stub　columns　by　examining　the　load-deformation　relationship,　the　cross-sectional　stress　distributions　of　steel　tube　and　concrete　core　and　their　interaction　during　the　entire　stage　of　fire　exposure.　Parametric　analysis　was　conducted　to　investigate　the　influence　of　heating　time,　initial　axial,　steel　ratio,　steel　yield　strength,　concrete　cube　strength,　spray　insulation　thickness　and　sectional　size　on　the　residual　strength　of　axially　loaded　CFCST　stub　columns.　Finally,　a　set　of　formulas　was　proposed　to　predict　the　residual　strength　of　axially　loaded　CFCST　stub　columns　after　exposure　to　fire.　©,　2015,　Hunan　University.　All　right　reserved.