In　order　to　improve　the　construction　efficiency　and　precision　of　prefabricated　steel　structures,　and　effectively　protect　the　main　members　of　the　structures　in　the　earthquake,　a　new　form　of　joint　was　proposed　in　this　study.　This　new　earthquake-resilient　high　ductility　prefabricated　opening-web　steel　channel　beam-column　joint　(HDPSJ)　was　designed　on　the　basis　of　the　concepts　of　modular　construction,　damage　control　and　buckling　restraint.　A　total　of　six　joint　specimens　were　tested　under　low-cycle　load　to　study　the　seismic　properties　and　post-earthquake　restoration　properties　of　the　new　joint,　and　the　curves　of　hysteresis,　skeleton　and　strain,　and　the　energy　dissipation　ability　of　specimen　were　obtained.　This　paper　mainly　studied　influences　of　the　thickness　of　the　flange　cover　plate　(FCP),　the　weakened　degree　of　FCPs　and　the　quantity　of　bolts　connecting　the　FCP　on　the　seismic　properties　and　restoration　properties　of　joints.　U-shaped　web　connecting　plate　(UWCP)　was　applied　to　this　type　of　joint　to　restraint　the　buckling　of　FCPs.　The　results　show　that　the　HDPSJs　have　excellent　bearing　capacity,　ductility　and　post-earthquake　repair　capacity,　and　the　indexes　of　the　restored　joints　are　still　up　to　the　seismic　standards;　the　yield　load　of　the　joint　principally　depends　on　the　thickness　of　FCP.　The　slip　of　FCP　is　mainly　determined　by　the　number　of　flange　connecting　bolts;　the　UWCP　can　effectively　improve　the　ductility　of　the　joint.　The　hysteretic　property　of　the　joint　is　stable　during　the　low-cycle　constant　amplitude　load,　which　shows　the　joint　also　has　the　function　of　a　damper.