The　strength　and　seismic　behavior　of　a　composite　column　may　be　used　to　assess　the　potential　damage　caused　by　fire　and　help　to　establish　an　approach　to　calculate　the　structural　fire　protection　for　minimum　postfire　repair.　This　paper　provides　new　test　data　pertaining　to　the　seismic　behavior　of　concrete-filled　hollow　structural　steel　(HSS)　columns　after　exposure　to　fire.　The　test　parameters　included　the　sectional　types,　the　fire　duration　time　and　the　axial　load　level　(n).　Thirteen　concrete-filled　HSS　column　specimens,　including　seven　specimens　with　circular　sections　and　six　specimens　with　square　sections　were　tested　under　constant　axial　load　and　cyclically　increasing　flexural　loading.　Comparisons　are　made　with　predicted　column　strengths　and　flexural　stiffness　using　the　existing　codes.　It　was　found　that　concrete-filled　HSS　columns　after　exposure　to　fire　exhibit　very　high　levels　of　energy　dissipation　and　ductility.　Generally,　the　energy　dissipation　ability　of　the　columns　with　circular　sections　was　much　higher　than　those　of　the　specimens　with　square　sections.　The　work　in　this　paper　provides　a　basis　for　further　theoretical　study　on　the　seismic　behavior　of　concrete-filled　HSS　columns　after　exposure　to　fire.