The　precast　composite　reinforced　concrete　wall　with　the　advantages　of　fewer　joints,　superior　impermeability　and　rapid　construction　provides　an　efficient　and　environmental　friendly　alternative　in　the　construction　of　underground　utility　tunnels　in　the　last　few　years.　To　investigate　the　seismic　performance　of　precast　concrete　composite　walls　of　utility　tunnels　with　grouting-sleeve　connection　under　out-ofplane　loads,　a　series　of　quasi-static　cyclic　tests　were　performed　on　the　full-scale　sidewall　specimens　with　different　axial　compression　ratios　in　this　study.　The　experimental　results　including　the　failure　modes,　crack　distributions,　and　the　influence　of　different　connections　on　the　out-of-plane　seismic　performance　of　precast　concrete　composite　wall　were　carefully　examined　and　compared　with　those　from　the　cyclic　tests　of　the　cast-in-place　sidewalls　of　the　utility　tunnel.　The　test　results　show　that　the　seismic　performance　of　the　precast　concrete　composite　sidewall　specimen,　such　as　the　hysteresis　curves,　the　ultimate　bearing　capacity,　stiffness　degradation　pattern　and　the　ductility　ratio,　is　basically　the　same　as　that　of　the　cast-in-place　specimen,　indicating　that　the　seismic　performance　of　the　prefabricated　structure　is　equivalent　to　that　of　the　cast-in-place　structure.　Moreover,　the　grouting-sleeves　of　the　joints　can　effectively　transfer　the　reinforcement　stress　until　the　failure　of　the　precast　concrete　composite　sidewall　specimens,　which　exhibits　excellent　out-of-plane　ductility　and　serviceability.