To　study　the　seismic　performance　of　sandwich　beam-column　joints　constructed　with　high　strength　concrete　column　and　normal　strength　concrete　floor　system　and　joint　regions,　four　specimens　with　different　column　to　beam　concrete　strength　ratios　()　were　tested　under　skew　cyclic　loads.　The　performance　indices　of　the　specimens　including　the　failure　mode,　ductility,　energy　dissipation　were　compared　and　analyzed.　The　results　show　that　the　failure　modes　of　the　sandwich　joints　are　in　form　of　joint　shear　failure　after　yielding　of　the　beam,　while　the　ductility　coefficient　is　found　to　be　greater　than　3.0.　Compared　to　the　joints　with　low　concrete　strength　ratios　,　the　specimen　with　a　high　concrete　strength　ratio　features　larger　deformation　at　the　joint.　Based　on　the　softened　strut-and-tie　model,　a　set　of　shear　strength　prediction　equations　for　the　sandwich　beam-column　joint,　taking　into　account　the　effects　of　the　concrete　strength　ratio　,　floor　slabs　and　plastic　region　of　beams,　is　proposed.　Comparison　of　the　present　tests　against　the　published　literature　confirms　that　the　shear　strength　of　the　sandwich　joints　can　be　well　predicted　by　the　proposed　model.