In　order　to　enhance　the　seismic　safety　of　the　bridge,　the　influence　of　soil-structure　interaction　under　earthquake　excitation　should　be　considered　for　the　bridge-foundation　system,　especially　for　the　foundation　consisting　of　soft　soil.　A　shaking　tables　test　was　performed　for　a　1:10　scaled　model　of　a　three-span　rigid-framed　bridge,　which　systematically　investigated　the　influence　of　soil-structure　interaction　on　seismic　response　of　the　bridge　model.　The　tested　results　indicate　that　the　peak　amplitude　and　spectrum　characteristics　of　the　input　ground　motion　change　obviously　because　of　SSI　effect.　Shear-wave　velocity　and　soil-layer　thickness　are　two　important　factors　affecting　SSI　effects.　The　displacement　response　and　strain　response　of　the　bridge　model　are　increased　when　soil-structure　interaction　is　taken　into　account.　The　effect　varies　with　the　spectrum　characteristics　of　the　ground　motions　and　the　inherent　characteristics　of　the　bridge-foundation　system.　Meanwhile,　the　results　also　verify　the　effectiveness　of　the　real-time　dynamic　hybrid　testing　technique.