A　kind　of　FPS　bearings　is　designed　for　isolating　superstructure　and　foundation　in　a　six-story　single　span　steel-frame　model　subjected　to　shake　table　testing.　Using　both　shake　table　tests　and　finite　element　analysis,　different　site　responses　were　analyzed　and　compared.　The　experimental　and　finite　element　analysis　results　indicate　that,　the　FPS　is　an　effective　isolation　device　that　can　lengthen　the　natural　period　and　reduce　the　earthquake　effect　on　upper　structure.