In　the　emergency　repair　process　of　seismic-damaged　structures,　it　is　necessary　to　determine　the　optimal　repair　strategy　according　to　damage　assessment　results,　available　repair　resources　and　repair　time.　In　this　study,　the　applicable　conditions　of　various　member-level　and　structure-level　damage　indexes　or　models　are　compared.　Then,　considering　the　actual　conditions　of　limited　available　repair　resources　and　repair　time　in　the　emergency　repair　process,　the　determination　method　of　the　optimal　imperfect　repair　strategy　is　established.　On　this　basis,　the　determination　method　of　the　optimal　repair　sequence　is　proposed　by　taking　seismic　resilience　as　the　evaluation　index.　Finally,　a　seismic　fragility　analysis　method　that　considers　uniform　collapse　risk　and　residual　service　life　of　structures　is　introduced,　which　can　be　used　to　analyze　the　seismic　performance　of　seismic-damaged　structures　and　to　compare　the　repair　effectiveness　of　different　repair　strategies.　Taken　a　5-story　reinforced　concrete　structure　as　an　example　for　analysis.　The　analysis　results　show　the　optimal　imperfect　repair　strategy　and　the　optimal　repair　sequence　determined　by　the　proposed　methods　can　effectively　improve　the　seismic　performance　of　seismic-damaged　structures.　The　fragility　analysis　results　further　confirm　that　the　repair　based　on　the　optimal　imperfect　repair　strategy　can　effectively　reduce　the　collapse　risk　of　seismic-damaged　structures.　©　2023　Elsevier　Ltd