In　this　study,　the　effects　of　grouting　sleeve　anchorage　defects　on　the　seismic　performance　of　prefabricated　concrete　shear　walls　were　studied,　and　a　fast　after-damage　retrofitting　method　has　been　proposed.　Six　specimens　were　investigated　under　cyclic　loading.　The　parameter　was　the　number　of　grouting　sleeve　anchorage　defects,　selected　as　0,　2,　and　4.　The　test　was　divided　into　two　loading　stages.　During　stage　1,　the　specimen　was　loaded　until　the　strength　dropped　below　85　%　of　its　peak　strength.　After　stage　1,　the　damaged　specimens　were　retrofitted　using　combined　retrofitting　method　of　steel　plate　and　high-strength　grouting　material,　and　then　subjected　to　loading　tests　in　stage　2.　The　resulting　damage　characteristics,　hysteretic　behavior,　stiffness,　strength,　and　energy　dissipation　capacity　were　studied.　The　strength　of　the　shear　wall,　considering　anchorage　defects,　was　calculated.　The　results　show　that　anchorage　defects　reduce　the　seismic　behavior　of　the　specimens.　Compared　with　the　two　defects,　the　strength　of　the　shear　wall　with　four　defects　did　not　significantly　change,　though　the　ductility　coefficient　and　energy　dissipation　capacity　decreased　considerably.　The　combined　steel　plate-high　strength　grout　retrofitting　method　could　significantly　improve　the　strength　and　energy　dissipation　and　effectively　restore　the　stiffness　of　prefabricated　shear　walls.　The　calculated　strength　of　the　shear　wall　is　in　good　agreement　with　the　experimental　value,　confirming　that　it　is　reliable　and　can　be　used　to　calculate　the　strength　with　anchorage　defects.　The　proposed　retrofitting　method　can　provide　a　new　choice　for　the　fast　damage　repair　of　the　post-earthquake　shear　walls.　©　2024　Elsevier　Ltd