A　novel　self-adaptive　damper　with　load　bearing,　energy　dissipation,　and　self-centering　phased　adaption　performance,　known　as　the　＂multifunctional　phased　self-adaptive　rotational　friction＂　(MFPSA-RF)　damper,　is　proposed　based　on　the　multilevel　seismic　concept.　This　innovative　damper　consists　of　multiple　MFPSA-RF　joints　and　several　corresponding　connecting　plates.　Each　MFPSA-RF　joint　comprises　three　friction　plates　clamped　together　by　high-strength　bolts　with　prestressed　combined　disc　springs.　The　friction　plates　are　specifically　combined　with　two　types　of　friction　surfaces-planar　and　wedge-shaped-to　enable　the　damper　to　exhibit　graded　self-adaptive　behavior.　The　working　mechanism　of　the　damper　is　elucidated,　and　a　theoretical　analysis　model　is　developed　to　describe　its　force-displacement　relationship.　Experimental　studies　on　the　damper　components　and　the　whole　damper　were　carried　out　to　test　its　hysteretic　behavior　and　further　validated　the　theoretical　analysis　model　of　the　MFPSA-RF　damper.　The　results　demonstrated　that　the　MFPSA-RF　damper　exhibits　prominent　adaptive　performance　with　MFPSA　performance,　characterized　by　high　stiffness　in　small　deformations,　stable　energy　dissipation　in　medium　deformations,　and　excellent　self-centering　capability　in　large　deformations.　Furthermore,　a　mathematical　hysteretic　model　based　on　the　Bouc-Wen　model　is　developed　to　capture　the　MFPSA　characteristic,　and　the　modified　model＇s　predicted　hysteretic　behavior　aligns　well　with　the　experimental　results.