With　the　aim　of　reusing　assembled　steel　structures　at　the　end　of　their　service　life　or　after　experiencing　earthquake　damage,　a　novel　demountable　and　reusable　steel　beam-to-column　joint　with　bolted-pinned　connection　has　been　proposed　herein.　Its　configuration　is　quite　beneficial　to　the　installation　and　disassembly　due　to　its　use　of　highstrength　bolts　and　pins.　The　energy-dissipating　connection　plate　(EDCP)　is　strategically　placed　in　the　predetermined　energy　dissipation　area,　of　which　the　yield　section　is　wrapped　by　an　external　restraining　plate,　allowing　for　concentrated　damage　and　deformation　of　the　main　structural　members　within　the　elastic　range　under　earthquake　actions.　The　EDCP　is　fabricated　from　a　low-yield-point　(LYP)　steel　material　that　has　excellent　ductility　and　high　energy　dissipation　capacity.　To　clarify　the　joint＇s　static　and　seismic　performance,　ten　joint　specimens　were　designed　and　prepared,　and　both　monotonic　and　cyclic　loading　tests　were　conducted.　The　failure　mode,　load　versus　displacement　response,　ductility,　and　energy　dissipation　capacity　were　obtained　and　analyzed　experimentally.　Furthermore,　the　cyclic　behaviour　of　the　same　tested　joints　after　disassembly　and　re-assembly　were　investigated　to　verify　their　reusability.　The　test　results　indicated　that　welding　stiffening　ribs　in　the　unrestrained　section　of　the　EDCP　can　significantly　enhance　the　joint＇s　static　loading　capacity　and　seismic　performance.　Additionally,　the　damage　of　all　the　joints　was　localized　within　the　EDCP,　and　no　failure　was　observed　in　the　beam,　column　components　and　column　seat,　which　remained　within　the　elastic　range　based　on　strain　data　analysis.　It　was　found　that　the　joint　specimens　could　be　disassembled　effortlessly　and　efficiently　with　nearly　no　damage　to　the　friction　surface　and　bolt　holes　within　the　connection　zone.　Furthermore,　the　seismic　performance　of　the　re-assembled　specimens　was　essentially　identical　to　that　of　the　original　specimens,　demonstrating　the　ability　of　reuse.