A　new-style　semi-assembled　shear　wall　structure　with　single　row　of　steel　bars　is　proposed.　This　type　of　structure　consists　of　upper　precast　concrete　shear　walls　with　reserved　holes,　lower　precast　shear　walls　with　single　row　of　button-head　steel　bars,　slurry　layer　between　upper　and　lower　precast　shear　walls,　and　cast-in-place　concealed　columns　between　longitudinal　and　transversal　walls.　Button-head　steel　bars　extending　from　the　surface　of　lower　precast　shear　walls　could　be　anchored　in　the　reserved　holes　of　upper　precast　shear　walls,　with　high　strength　grouting　material　filling　the　holes.　Four　I-shaped　recycled　concrete　shear　wall　specimens　with　single　row　of　steel　bars　were　tested　under　low　cyclic　loading　with　low　axial　compression　ratio,　including　two　semi-assembled　and　two　cast-in-place　shear　walls　with　different　shear　span　ratios.　The　bearing　capacity,　stiffness,　ductility　and　hysteretic　characteristics　were　comparatively　analyzed.　The　damage　evolution　process　and　seismic　mechanism　was　revealed.　Test　results　show　that　shear　walls　with　smaller　shear　span　ratio　of　1.0　present　shear　failure　with　higher　bearing　capacity,　specimens　with　shear　span　ratio　of　1.5　tend　to　flexural-shear　mode　failure,　mainly　in　flexural　failure,with　lower　bearing　capacity　but　good　ductility.　With　the　design　axial　compression　ratio　of　0.15,　the　comprehensive　seismic　performance　of　semi-assembled　recycled　concrete　shear　wall　with　single　row　of　steel　bars　is　close　to　that　of　cast-in-place　shear　wall,and　it　could　be　used　for　low-rise　and　multi-story　buildings.　©　2017,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.