To　protect　Chinese　ancient　building　aseismic　behaviors　of　Chinese　ancient　wooden　structure　strengthened　by　steel　components　on　tenon-mortise　joint　were　studied　by　experiments.　Based　on　actual　sizes　of　some　part　of　Taihe　Palace　in　the　Forbidden　City,　wooden　frame　models　with　a　scale　of　1:　8　of　the　prototype　structure　were　built　considering　tenon-mortise　connections.　By　manual　loading　means　low　cyclic　reversed　loading　tests　were　carried　out　considering　3　unstrengthened　models　and　2　steel　components　strengthened　models.　By　experiments　load-displacement　hysteretic　curves　as　well　as　skeleton　curves　of　the　models　were　obtained;By　analysis　energy　dissipation　capability,　stiffness　degradation　as　well　as　deformation　performance　of　each　model　were　also　studied.　Results　show　that　after　the　model　is　strengthened　by　steel　components　on　tenon　mortise　location,　value　of　tenon　pulled　out　of　mortise　becomes　less;　for　the　structure　its　stiffness　and　strength　are　enhanced,　its　stiffness　degradation　is　not　obvious,　it　still　has　good　deformation　performance　and　energy　dissipation　capability.　Thus　the　strengthening　method　is　effective.