A　dynamic　reliability　analysis　based　on　the　pseudo-excitation　method　in　the　frequency　domain　was　proposed　to　investigate　the　pounding　reliability　of　high-pier　bridges　subjected　to　seismic　excitations　with　different　ground　motion　intensity　levels.　A　high-pier　bridge　was　selected　as　the　numerical　example　and　the　pounding　reliability　of　the　high-pier　bridge　was　computed　for　each　ground　motion　intensity　level.　The　horizontal　acceleration　response　spectrum　was　chosen　as　the　seismic　intensity　measure　and　the　response　spectra　for　different　intensity　measures　were　converted　into　the　corresponding　power　spectra.　Next,　the　stochastic　vibration　equation　was　solved　using　the　pseudo-excitation　method　to　determine　the　mean　and　mean　square　deviation　of　the　structural　dynamic　responses.　The　expected　values　and　standard　deviation　of　the　structural　peak　responses　were　obtained　using　Davenport＇s　theory.　Finally,　the　pounding　reliability　between　the　adjacent　beams　of　the　high-pier　bridge　was　determined　using　the　first　passage　theory.　The　results　indicate　that　pounding　will　not　occur　between　the　adjacent　decks　and　the　pounding　reliability　is　1.0　when　the　ground　acceleration　is　less　than　0.22g.　In　addition,　there　is　an　obvious　decrease　in　the　pounding　reliability　such　that　the　structure　collides　under　the　strong　ground　motions　when　the　ground　acceleration　is　more　than　0.22g.　©　2018,　Editorial　Department　of　Journal　of　Southwest　Jiaotong　University.　All　right　reserved.