The　bond　behaviors　of　recycled　aggregate　concrete-filled　steel　tube　(RACFST)　stub　columns　after　exposure　to　high　temperatures　were　investigated　based　on　the　push-out　experimental　tests　of　36　heated　and　six　unheated　RACFST　specimens.　The　influences　of　five　variable　parameters,　that　is,　temperature　level,　replacement　ratio　of　recycled　coarse　aggregate　(RCA),　cross-section　type,　concrete　strength　and　interface　length,　on　the　bond　strength　and　bond　stress-slip　curves　were　discussed.　Results　suggest　that　the　bond　stress-slip　curves　of　push-out　RACFST　specimens　at　high　temperature　differ　from　those　at　ambient　temperature.　Additionally,　the　bond　strength　was　found　to　increase　with　increasing　temperature.　The　bond　strength　at　a　high　temperature　of　800　degrees　C　is　about　3　times　higher　than　that　at　room　temperature.　The　bond　strength　can　be　increased　up　to　2.6　times　after　high　temperature　with　the　same　RAC　replacement　ratio.　Based　on　the　experimental　results,　regression　analysis　was　conducted　to　develop　a　bond　strength　model　to　predict　the　bond　behavior　between　recycled　aggregate　concrete　and　steel　tube　after　exposure　to　high　temperatures.