As　an　important　component,　the　mechanical　properties　of　the　prefabricated　beam-column　steel　joints　have　an　effect　on　the　mechanical　mechanism　of　the　whole　frame　structure　system.　According　to　the　concept　of　replaceable　post-earthquake　and　plastic　damage　control,　the　earthquake-resilient　prefabricated　beam-column　steel　joint　with　double　flange　cover　plates　(ERPBJ　with　double　FCPs)　has　been　proposed.　To　investigate　the　overall　performance　of　the　new　steel　frame　with　the　new　joint,　four　frame　specimens　are　designed,　and　low-cycle　reciprocating　loading　test　and　low　cycle　fatigue　test　had　been　carried　out　on　them.　The　influence　of　the　number　of　bolts,　width　of　weakened　dog-bone,　post-earthquake　repairability　and　different　loading　protocols　have　been　studied.　The　failure　mode,　hysteretic　curve,　skeleton　curve,　the　displacement　ductility　coefficient,　the　equivalent　viscous　damping　coefficient　have　been　obtained.　The　study　results　shows　that　the　new　earthquake-resilient　prefabricated　steel　frame　(ERPSF)　with　double　FCPs　have　the　advantage　of　controlling　the　damage　positions.　The　plastic　damage　occurs　on　the　replaceable　FCPs,　which　ensures　the　structural　performance,　and　the　main　structural　components　don　not　undergo　plastic　deformation.　The　decrease　of　the　number　of　bolts　will　make　the　slip　of　FCPs　more　obvious,　which　will　lead　to　the　failure　to　fully　utilize　the　bearing　capacity　of　the　FCP　and　reduce　the　ultimate　load　of　the　frame,　but　will　improve　the　ductility　and　energy　dissipation　capacity　of　the　frame.　The　behavior　of　ERPSF　with　double　FCPs　is　stable　under　low　cycle　fatigue　loading　test　and　many　repair　tests,　which　indicates　that　the　ERPBJ　with　double　FCPs　can　be　used　as　a　damper　in　the　frame　structure　system.