To　study　the　seismic　failure　mode　and　dynamic　response　characteristics　of　ultra-high　performance　concrete　(UHPC)　rectangular　hollow　bridge　pier　under　dynamic　loads,　the　El　Centro　wave,　Taft　wave,　and　Northridge　wave　were　selected　as　seismic　excitation　for　the　shaking　table　test.　The　responses　such　as　natural　frequency,　damping　ratio,　acceleration-time　and　displacement-time　curves　were　investigated　and　the　results　were　compared　with　the　finite　element　simulation　results.　At　the　same　time,　8　finite　element　models　(FEMs)　of　UHPC　rectangular　hollow　bridge　pier　were　established　to　explore　the　influence　of　longitudinal　reinforcement　ratio　and　stirrup　ratio　on　the　seismic　performance　of　bridge　piers.　The　results　indicated　that　with　the　increase　of　peak　ground　acceleration　(PGA),　the　damping　ratio,　acceleration,　displacement　and　UHPC　strain　of　the　specimen　increased,　while　the　natural　frequency　and　the　dynamic　amplification　factor　of　the　pier　decreased　gradually　due　to　the　accumulation　of　damage.　The　increase　of　longitudinal　reinforcement　ratio　improves　the　ductility,　and　the　increase　of　stirrup　ratio　enhances　the　constraint　effect　of　core　UHPC　and　ductility　to　a　great　extent,　which　leads　to　different　acceleration,　displacement　and　equivalent　plastic　strain　response　of　bridge　piers.　On　the　whole,　the　stiffness　of　UHPC　rectangular　hollow　bridge　pier　was　degraded　after　the　input　of　seismic　wave,　but　the　ultimate　bearing　capacity　was　not　deteriorated.　The　overall　seismic　performance　is　superior.　In　areas　with　low　seismic　fortification　intensity,　the　reinforcement　ratio　of　UHPC　rectangular　hollow　bridge　piers　can　be　appropriately　reduced.