According　to　the　structural　design　characteristics　of　Dalian　International　Conference　Center,　two　mild　steel　energy　dissipation　joint　specimens　with　arc-shaped　contact　plate　were　designed.　The　horizontal　cyclic　loading　test　was　carried　out　for　1:1　scaled　joint　specimens　with　different　working　parameters　in　order　to　investigate　the　seismic　performance.　Based　on　the　experiment,　the　load-carrying　capacity,　stiffness　and　its　deteriorative　behavior,　hysteretic　behavior,　ductility,　energy　dissipation　and　failure　mode　of　two　specimens　were　discussed.　Calculation　method　for　load-carring　capacity　of　the　mild　steel　energy　dissipation　joint　is　given　and　the　results　agree　well　with　the　experimental　results.　The　test　results　show　that　the　joint　specimen　with　mild　steel　contact　plate　of　thickness　18mm　has　stronger　deformability　and　higher　energy　dissipation　capacity.