In　order　to　propose　the　method　for　the　fire　resistance　design　of　steel　beams,　a　finite　element　(FE)　model　was　proposed　to　simulate　the　fire　performance　of　steel　beams　with　shell　element.　The　FE　model　was　then　used　to　study　the　failure　mode,　the　deformation　and　internal　force　redistribution　of　the　steel　beams　in　fire.　At　the　same　time,　the　fire　performance　of　the　isolated　steel　beams　was　compared　with　that　of　the　steel　beams　in　frame　structures.　The　results　show　that　the　boundary　conditions　have　much　influence　on　the　failure　mode　of　the　steel　beams;　the　axial　compression　force　of　the　isolated　steel　beams　is　bigger　than　that　of　the　steel　beams　in　the　frame　structures.　©,　2015,　Beijing　University　of　Technology.　All　right　reserved.