To　explore　the　influence　of　employing　ultra-high　strength　steel　bars　(UHSB)　in　columns　on　the　seismic　performance　of　recycled　aggregate　concrete　(RAC)　beam-column　joints,　four　beam-column　joints　were　tested　under　constant　axial　load　and　cyclic　lateral　load.　The　results　revealed　that　the　shear　failure　at　the　end　of　beams　occurred　in　all　beam-column　joints.　And　the　crack　widths　of　beam-column　joints　employing　UHSB　in　columns　satisfied　the　AIJ　guidelines,　indicating　satisfactory　resilience.　Due　to　the　weaker　bonding　between　UHSB　and　RAC,　the　strain　distribution　of　UHSB　was　more　uniform　than　that　of　HRB600　grade　steel　bars　in　columns.　Consequently,　the　finite　element　models　of　beam-column　joints　were　established　by　setting　nonlinear　springs,　ensuring　accurate　representation　of　the　hysteretic　behavior.　The　numerical　results　also　confirmed　that　beam-column　joints　employing　UHSB　in　columns　had　a　slighter　damage　degree　of　RAC,　and　the　strain　of　stirrups　was　smaller　in　the　joint　core.　It　was　indicated　that　the　shear　force　transferred　from　UHSB　to　joint　cores　was　relatively　smaller.　In　conclusion,　beam-column　joints　employing　UHSB　in　columns　had　good　seismic　performance　and　resilience,　which　can　be　applied　to　the　resilient　structures.