In　recent　years,　the　elliptical　concrete-filled　steel　tube　(CFST)　structure　has　attracted　the　attentions　of　architects　and　structural　engineers　gradually.　Compared　with　the　traditional　circular　and　square　CFST　columns,　the　elliptical　CFST　columns　have　streamline　appearance　and　can　provide　higher　torsion　rigidity,　so　they　have　wide　application　prospect　in　high-rise　and　large-span　building　structures.　Previous　researchers　have　investigated　the　post-fire　bond　behaviour　of　circular　and　square　CFSTs　experimentally　and　theoretically,　but　no　relevant　research　has　been　reported　on　the　post-fire　bond　behaviour　of　elliptical　CFST.　Spring　elements　are　used　to　simulate　the　slip　between　the　steel　tube　and　concrete,　and　finite　element　analysis　(FEA)　model　is　developed　to　analyse　the　post-fire　bond　behaviour　of　elliptical　CFSTs.　For　comparison,　the　FEA　models　of　circular　and　square　CFSTs　with　the　same　interface　contact　area　as　that　of　the　elliptical　CFST　are　established　as　well.　The　temperature　distribution,　post-fire　bond　stress-slip　relationship　and　bond　strength　of　the　three　types　of　CFSTs　are　analysed　according　to　the　FEA　models.　Finally,　based　on　the　established　FEA　model,　parametric　study　on　the　post-fire　bond　strength　of　elliptical　CFSTs　is　conducted.　The　investigated　parameters　include:　target　temperature　(20　℃,　600　℃　and　800　℃),　high　temperature　duration　time　(30　min,　90　min,　120　min　and　180　min),　concrete　strength　(30　MPa,　40　MPa,　50　MPa,　60　MPa),　section　perimeter　(388　mm,　484　mm,　630　mm,　727　mm)　and　aspect　ratio　(1.　25,　1.　50,　2.　00,　2.　25).　It　can　be　found　that　the　influences　of　concrete　strength　and　section　perimeter　on　the　bond　strength　of　elliptical　CFST　after　fire　are　significant,　while　the　influence　of　other　parameters　is　relatively　minor.　©　2021,　Editorial　Office　of　China　Civil　Engineering　Journal.　All　right　reserved.