To　protect　Chinese　ancient　building　aseismic　behaviors　of　Chinese　ancient　tenon-mortise　joint　strengthened　by　CFRP(Carbon　Fibre　Reinforced　Plastic)　were　studied　by　experiments.Based　on　actual　sizes　of　an　ancient　building,Wooden　frame　models　with　a　scale　of　1:8　of　the　prototype　structure　were　built　considering　Yan-wei　type　of　tenon-mortise　connections.　Experiments　were　carried　out　including　3　groups　of　unstrengthened　structure　and　2　groups　of　structure　strengthened　by　CFRP.By　low　cyclic　reversed　loading　tests　moment-rotation　hysteretic　curves　as　well　as　skeleton　curves　for　each　joint　were　obtained;By　analysis　energy　dissipation　capability,stiffiness　degradation　as　well　as　deformation　performance　for　joint　were　also　studied.Results　show　that　after　strengthened　by　CFRP,stiffness,strength　and　energy　dissipation　capability　of　the　joint　are　enhanced,its　stiffness　degradation　is　not　obvious,and　its　deformation　performance　remains　good.Thus　CFRP　is　useful　for　strengthening　tenon-mortise　joint　of　Chinese　ancient　building.