In　order　to　study　the　effect　of　keyways　in　the　precast　boundary　elements　on　the　seismic　performance　of　hollow　shear　walls,　quasi-static　tests　were　carried　out　on　four　specimens　with　different　axial　compression　ratios　and　with　or　without　keyways　in　the　precast　boundary　element　of　hollow　shear　walls.　The　results　show　that　the　failure　modes　of　the　hollow　shear　wall　specimens　with　boundary　elements　of　different　configurations　are　all　flexural-compression　failure,　with　full　of　cracks　on　the　wall　body　and　many　short　cracks　on　both　sides　of　the　vertical　hole.　The　concrete　at　both　ends　of　the　bottom　wall　crushes,　the　reinforcement　bars　are　buckled,　and　part　of　longitudinal　reinforcement　fractures.　The　hysteresis　curves　of　hollow　plate　shear　walls　are　obviously　different　with　or　without　a　keyway.　The　hysteresis　curves　of　the　shear　walls　with　the　keyway　are　full,　while　the　hysteretic　curve　of　the　shear　wall　without　the　keyway　appears　slip.　The　ultimate　drift　ratio　is　1.　5%　-2.　3%　.　Due　to　the　precast　hollow　panel　has　support　legs　at　both　ends,　the　‘swaying　wall’　phenomenon　appears　when　the　axial　load　is　relatively　low.　The　keyway　in　the　precast　boundary　elements　can　avoid　the　this　phenomenon　of　hollow　shear　walls.　The　load-carrying　capacity　of　shear　wall　is　increased　by　15%　-19%,　and　the　stiffness　and　energy　dissipation　capacity　are　also　improved　to　a　certain　extent.　Therefore,　it　is　suggested　to　set　a　keyway　in　the　precast　boundary　elements　of　the　hollow　shear　wall　and　increase　the　length　of　the　support　legs　at　both　ends　of　the　hollow　panel.　©　2023　Science　Press.　All　rights　reserved.