Prefabricated　high-strength　concrete　composite　beam-to-column　joints　were　widely　used　in　civil　engineering.　Six　full　scale　cruciform　type　test　samples　with　different　parameters　(thickness　of　steel　joint　plate　and　reinforcement　ratio　of　column)　were　constructed　and　tested　under　cyclic　lateral　loading　to　study　on　the　hysteretic　behavior.　The　load-displacement　curves,　failure　mode,　stiffness　degradation　and　energy　dissipation　capacity　were　presented.　It　was　found　that　the　strength　and　stiffness　are　less　influenced　by　the　steel　joint　plate　thickness,　but　more　influenced　by　the　reinforcement　ratio　of　the　column.　Failure　modes　were　transformed　from　brittle　shear　in　the　column　diagonals　to　a　ductile　one　in　the　beam　region,　more　ductile　behavior　and　slower　stiffness　degradation　were　observed　for　the　specimens　strengthened　by　CFRP　materials.　The　findings　from　the　analysis　were　of　guiding　significance　to　the　design　and　construction　of　the　composite　joint.　©　2010,　International　Association　for　Bridge　and　Structural　Engineering　(IABSE).　All　rights　reserved.