Soil　liquefaction　induced　by　earthquake　will　cause　very　large　damage　to　structures,　especially　to　the　pile　foundations.　Pre-stressed　high-strength　concrete　(PHC)　pipe-piles　were　regarded　as　the　relatively　economic　and　effective　piles　in　practical　engineering.　However,　the　failure　modes　of　PHC　pipe-piles　and　the　interaction　of　soil-pile　with　or　without　liquefiable　soils　are　still　unclear.　A　testing　on　the　seismic　failure　mode　of　PHC　pipe-piles　in　liquefiable　soils　had　been　conducted　under　shaking　table.　The　PHC　pipe-piles　were　employed　and　tested　under　a　series　of　sine　and　El　Centro　earthquake　waves　as　well　as　artificial　ground　motions　based　on　in-site,　and　the　particular　attention　was　paid　to　the　failure　mode　of　the　piles　and　basic　experimental　phenomena　during　soils　liquefaction.　The　testing　results　demonstrate　that　the　presence　of　prestress　can　significantly　improve　anti-seismic　shear　forces　and　the　failure　modes　of　PHC　pipe-piles　in　liquefiable　soil　have　a　little　different.　©　ASCE.