Based　on　the　idea　of　damage　control,　a　new　type　of　earthquake-resilient　prefabricated　composite　joint　(ERPCJ)　with　the　T-shape　connector　has　been　proposed.　On　the　premise　of　considering　the　composite　action　of　concrete　slab　and　beam-column　joint,　the　seismic　behavior,　post-earthquake　recoverability　and　failure　mode　of　concrete　slab　under　different　loading　protocols　are　studied.　By　changing　the　connection　mode　between　flange　cover　plate　(FCP)　and　beam,　the　influence　of　the　relative　slip　between　FCP　and　beam　on　the　bearing　capacity　and　energy　dissipation　capacity　of　the　specimen　are　also　studied.　The　low　frequency　cyclic　loading　tests　and　low　cyclic　fatigue　tests　of　six　specimens　show　that　the　basic　and　repaired　specimens　of　the　prefabricated　composite　joints　with　re-coverable　functions　show　good　seismic　behavior.　The　plastic　damage　of　steel　joint　is　concentrated　on　FCP,　while　the　main　structural　members　such　as　beam　and　column　still　maintain　elasticity.　The　collaborative　work　of　T-shape　connector　with　foams,　concrete　slab　and　the　gaps　between　concrete　slab　and　column　can　reduce　the　plastic　damage　of　concrete　slab.　The　main　reason　of　concrete　slab　damage　is　the　strong　squeezing　effect　between　con-crete　slab　and　T-shape　connector　in　negative　moment　zone.　Whether　FCP　can　slip　or　not　can　make　a　great　differ-ence　in　the　bearing　capacity　and　energy　dissipation　capacity　of　the　joint.　The　damage　and　deformation　of　FCP　are　small　when　FCP　and　beam　can　slide　relatively,　but　the　bearing　capacity　and　energy　dissipation　capacity　of　the　joint　are　low.　The　bearing　capacity　and　energy　dissipation　capacity　of　the　joint　are　high　when　FCP　and　the　beam　cannot　slip　relatively,　but　FCP　will　cause　serious　plastic　damage　and　even　fracture.　(c)　2021　Elsevier　Ltd.　All　rights　reserved.