To　deal　with　the　problem　of　stress　concentration　and　component　failure　at　the　right-angle　area　of　I-shaped　combined　steel　lead　damper,　an　oval　steel-lead　damper　(OSLD)　composed　of　steel　and　lead　was　presented,　which　had　advantage　of　simple　manufacture　process　and　good　energy　dissipation　capacity　in　the　two　horizontal　directions.　Plane　stress　analysis　of　the　steel　plate　of　OSLD　was　performed.　The　mechanical　property　tests　of　OSLD　were　carried　out,　and　the　nonlinear　analysis　model　was　established　by　ANSYS,　of　which　results　were　compared　to　the　test　results.　The　shaking　table　tests　of　a　six-storey　steel　frame　structure　model　with　and　without　OSLDs　were　performed　and　compared.　Research　results　show　that　the　numerical　simulation　results　are　in　agreement　with　the　test　results,　which　indicate　that　the　method　of　establishing　numerical　model　is　correct.　The　OSLD　has　full　hysteresis　curves　and　good　energy　dissipation　capacity,　and　the　OSLD　has　well　vibration　control　effect　of　seismic　responses　on　multi-storey　structure.　©　2017,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.