A　nonlinear　finite　element　model　is　used　to　calculate　the　load　versus　deformation　relations　of　steel　beam　to　concrete-filled　steel　tubular　column　connections　after　exposure　to　standard　fire　under　combined　constant　axial　load　and　cyclically　increasing　flexural　load.　Based　on　the　theoretical　model　verified　by　tested　results,　the　influences　of　the　fire　duration　time,　sectional　dimension,　slenderness　ratio,　steel　ratio,　beam-column　stiffness　ratio,　beam-column　moment　ratio,　axial　load　level　on　the　load　versus　deformation　relation　of　this　type　connection　after　exposure　to　fire　are　discussed.