A　new　type　of　RC　core　walls　with　concrete　filled　steel　tube　(CFT)　columns　and　concealed　steel　trusses　was　proposed　in　this　paper.　In　order　to　evaluate　its　seismic　performance,　two　specimens　of　1/6　scale　core　walls,　one　with　CFT-columns　and　the　other　with　CFT-columns　and　concealed　steel　trusses,　were　tested　under　the　cyclic　loading.　Based　on　experiment　results,　the　load-carrying　capacity,　ductility,　hysteretic　characteristics,　energy　dissipation　capacity,　stiffness　degradation　and　damage　characteristics　of　the　two　specimens　were　compared　and　analyzed.　It　showed　that　the　seismic　performance　of　core　walls　with　CFT-columns　and　concealed　steel　trusses　was　better　than　that　with　CFT-columns　only.　The　mechanical　model　of　the　load-carrying　capacity　of　this　new　composite　core　walls　was　established　upon　the　experiment.　The　calculated　results　were　in　good　agreement　with　those　from　the　experiment.