Based　on　the　ideas　of　damage　control　and　energy　dissipation　by　sliding,　this　paper　puts　forward　an　earthquake-resilient　prefabricated　steel　frame　with　two　open-web　steel　channel　beams　(OWSCBs).　To　study　its　seismic　performance　and　post-earthquake　repair　performance,　the　low　frequency　cyclic　loading　tests　and　low　cyclic　fatigue　tests　were　carried　out　on　five　specimens,　and　several　seismic　behavior　indicators　such　as　the　hysteretic　curve,　the　slip　curve,　the　strain　analysis　curve　and　the　skeleton　curve　of　frames　were　obtained.　The　influence　of　the　thickness　of　the　flange　cover　plate　(FCP),　the　number　of　connecting　bolts　in　the　FCP　and　the　residual　deformation　on　seismic　performance　of　prefabricated　steel　frames　before　and　after　restoration　were　mainly　investigated.　The　results　show　that　there　are　two　main　failure　modes　of　the　specimen,　one　is　FCP　friction　sliding　and　the　other　is　local　buckling　deformation　of　FCP　dog-bone　weakened　section,　while　the　main　components　such　as　beams　and　columns　are　still　in　the　elastic　stage.　The　repaired　specimens　have　the　same　experimental　phenomena　and　seismic　performance　as　the　initial　specimen,　which　indicates　that　the　functional　restoration　of　prefabricated　steel　frame　structures　can　be　realized　by　repairing　beam-column　joint　connecting　devices.　The　repair　process　of　the　specimen　with　residual　story　drift　went　well,　and　this　specimen　still　showed　good　mechanical　and　seismic　performance　after　repaired.　The　overall　bearing　capability　of　the　specimens　decreases　obviously　with　the　thickness　of　the　FCP　decreasing.　The　decrease　in　the　number　of　the　connecting　bolts　in　the　FCP　will　reduce　the　critical　sliding　load　of　the　FCP,　which　will　lead　to　the　slippage　of　the　FCP　in　advance　and　reduce　the　overall　bearing　capability　of　the　specimens.　©　2020　Elsevier　Ltd