Strengthening　and　repairing　a　building　structure　with　a　carbon　fiber　net(CFN)reinforcement　system　can　improve　its　mechanical　performance　without　changing　the　sizes　of　the　component　sections.　To　comprehensively　evaluate　the　seismic　performance　of　a　masonry　structure　strengthened　with　CFN,　we　designed　four　non-rebar　masonry　walls　and　performed　low-cycle　reversed　loading　tests　to　investigate　the　effect　of　different　reinforcement　methods　on　the　failure　modes,　bearing　capacity,　hysteretic　curves,　stiffness　degradation,　ductility,　and　energy　dissipation　capacity　of　the　masonry　structure.　The　results　show　that　CFN　reinforcement　system　does　not　peel　off　significantly　when　the　reinforced　walls　are　damaged,　and　it　bonds　and　works　effectively　with　the　base　of　the　wall.　The　damage　modes　differ　for　unreinforced　and　reinforced　walls;　unreinforced　wall　experience　brittle　shear　failure,　single-sided　reinforced　wall　exhibit　good　ductile　shear　failure,　and　double-sided　reinforced　walls　exhibit　bending　shear　failure　with　excellent　ductility.　A　CFN　reinforcement　system　can　effectively　limit　cracks　and　can　inhibit　the　development　of　main　cracks　in　the　wall,　ensures　its　integrity,　and　improves　the　reparability　of　the　wall.　Compared　with　unreinforced　walls,　the　ultimate　bearing　capacity,　ductility,　and　energy　consumption　of　reinforced　walls　are　improved　significantly.　The　effect　on　double-sided　CFN　reinforced　wall　is　the　most　significant,　increasing　the　ultimate　bearing　capacity　by　87.0%　and　the　ductility　coefficient　by　52.2%,　and　the　energy　consumption　capacity　is　the　strongest　at　the　same　displacement　in　the　later　loading　stage.　Single-sided,　double-sided　and　double-sided　CFN　reinforced　walls　with　end　anchoring　have　greater　initial　stiffness,　i.e.　1.11,　2.38,　1.64　times　that　of　an　unreinforced　wall,　respectively.　The　stiffness　of　each　reinforced　wall　has　obvious　lag　compared　with　an　unreinforced　wall　and　the　failure　stiffness　is　greater　than　that　of　the　unreinforced　wall.　The　seismic　effect　of　the　double-sided　CFN　reinforced　wall　with　end　anchoring　is　stronger　than　that　of　the　single-sided　reinforced　wall　but　weaker　than　that　of　the　double-sided　reinforced　wall.　These　experimental　results　provide　technical　support　for　the　engineering　application　of　masonry　structures　reinforced　with　CFN.　©　2019,　Editorial　Board　of　Journal　of　Tianjin　University(Science　and　Technology).　All　right　reserved.