Shear　wall　with　concealed　truss　is　brought　forward.　This　concealed　truss　can　be　constructed　with　profiled　steel,　steel　bar　or　profiled　steel　appending　steel　bar.　This　new　composite　shear　wall　includes　two　kinds　of　composition.　One　is　composition　of　two　bearing　systems,　including　truss　and　shear　wall.　The　other　is　composition　of　two　materials,　including　steel　and　concrete.　The　experimental　study　were　carried　out　on　the　seismic　behavior　of　six　1/3　scale　shear　walls,　including　a　usual　shear　wall,　a　shear　wall　with　steel　frame,　a　shear　wall　with　steel　bar　truss,　a　shear　wall　with　steel　frame　and　steel　bar　truss,　a　shear　wall　with　steel　truss　and　a　shear　wall　with　steel　and　steel　bar　truss.　Based　on　the　experimental　study,　the　stiffness　and　its　attenuation,　load-carrying　capacity,　ductility,　hysteretic　property,　energy　dissipation　and　failure　phenomena　of　each　shear　wall　are　contrastively　analyzed.　The　experimental　results　show　that　the　seismic　behavior　of　the　shear　wall　with　steel　frame　and　every　truss　with　different　materials　is　obviously　improved.　The　formulas　of　load-carrying　capacity　are　established.　The　results　obtained　from　the　formulas　and　that　from　experiment　are　in　good　agreement.　Finally,　some　suggestions　for　seismic　design　of　this　new　shear　wall　are　proposed.