In　recent　years,　bridges　with　ultra-high　piers　(UHPs,　the　pier　height　of　which　＞=　100　m)　have　been　increasingly　used　in　mountainous　areas　and　may　be　subjected　to　impact　loads　such　as　rock　falls.　However,　research　on　the　impact　performance　of　UHPs　is　very　limited,　and　it　is　essential　to　understand　their　dynamic　responses　and　failure　modes　under　impact　loads.　In　this　study,　we　conducted　a　rare　large-scale　experimental　investigation　on　a　1/20scale　UHP　specimen　subjected　to　multiple　impact　tests　via　a　pendulum　impact　system.　The　failure　mode,　impact　force,　and　displacement　of　the　UHP　specimen　were　recorded　and　analysed.　On　this　basis,　the　numerical　model　of　UHP　was　established　and　validated　against　the　experimental　results　using　LS-DYNA.　And　systematic　numerical　analysis　was　subsequently　conducted　to　investigate　the　influence　of　parameters　on　the　impact　response　of　a　scaled　entire　bridge　with　UHPs,　including　impactor　diameter,　axial　load,　impact　height,　and　impact　velocity.　The　results　indicated　that　UHP　predominantly　exhibited　flexural　failure　modes　under　mid-height　impact.　The　lower　local　and　overall　stiffness　of　UHPs　results　in　smaller　impact　forces　compared　to　similar　tests　on　medium　and　lowheight　piers.　The　increase　in　impactor　diameter　from　0.25b　to　1.5b　(b:　pier　section　width)　increased　the　impact　force　by　approximately　54　%;　meanwhile,　the　increase　in　impact　velocity　from　5　to　20　m/s　boosted　the　impact　force　by　roughly　157　%　and　reduced　the　impact　duration　by　about　76　%.　In　contrast,　a　higher　impact　height　reduced　the　peak　shear　force　at　the　pier　bottom　by　35.6-47.4　%.　The　findings　can　be　used　as　references　for　the　anti-impact　design　of　UHPs.