In　order　to　study　the　seismic　performance　of　a　concrete　frame　stair　structure　with　damping　support,　a　1　:2　damping　support　stair　test　model　was　designed　and　made,　and　the　quasi-static　test　was　carried　out.　The　failure　mode,　hysteretic　performance,　and　deformation　ability　of　the　damping　bearing　stair　were　studied　experimentally.　The　working　mechanism　of　the　damping　bearing　stair　was　analyzed,　and　the　experimental　results　of　the　damping　bearing　stair　were　compared　with　those　of　fixed　bearings　and　sliding　bearing　stairs.　Test　results　show　that　the　damping　bearing　the　stairs　by　damping　bearing　bench　plate　deformation　and　energy　dissipation　of　protection,　load　to　damage,　the　bench　plate.　There　was　no　obvious　damage,　peak　load　bearing　capacity　after　falling　slowly.　There　is　still　good　bearing　capacity　and　deformation　capacity.　Damage　occurs　mainly　in　the　frame　beam,　the　ladder　beam.　Its　ductility　is　better　than　the　fixed　support　stairs.　Bearing　capacity　and　energy　dissipation　capacity　are　higher　than　sliding　support　the　stairs.　©　2022,　Editorial　Office　of　Journal　of　Vibration　and　Shock.　All　right　reserved.