This　paper　provides　new　test　data　of　cyclic　behavior　of　repaired　concrete-filled　steel　tubular　(CFST)　columns　after　exposure　to　lire,　the　fire-damaged　CFST　columns　being　strengthened　by　wrapping　the　original　columns　by　concrete　and　it　thin-walled　steel　tube.　The　test　parameters　included　the　cross-section　type　(circular,　square　and　rectangular),　and　the　axial　load　level　(0,　0.3.　0.6).　It　was　found　that　all　the　test　specimens　behaved　in　it　ductile　manner　and　testing　proceeded　in　a　smooth　and　controlled　way.　Based　on　the　experiment　measurements,　the　ultimate　lateral　strength,　flexural　stiffness.　dissipated　energy　and　ductility　of　the　columns　are　analyzed　and　compared.　The　test　results　indicate　that　the　ultimate　lateral　strength　and　flexural　stiffness　of　concrete-filled　hollow　structural　columns　decrease　after　exposure　to　fire,　however,　the　ductility　of　the　columns　was　not　adversely　affected　due　to　the　fire　exposure.　The　test　results　also　indicate　that　the　strength　and　stiffness　of　the　fire-damaged　columns　call　be　restored　over　the　original　level　of　the　specimens.　(c)　2006　Elsevier　Ltd.　All　rights　reserved.