The　geosynthetic　reinforced　pile　supported　embankment　is　a　new　ground　treatment　technology　developed　in　recent　years.　The　advantages　of　this　technology　include　reduction　of　number　of　piles,　decrease　of　project　costs　and　increase　of　construction　speed.　Finite　element　method　is　used　to　analyze　the　deformations　in　geosynthetic　reinforced　pile　supported　embankments　under　high-speed　train　loads.　The　influences　of　soft　soil　deformation　modulus,　elastic　modulus　of　piles,　elastic　modulus　of　geogrid　and　the　space　between　piles　on　the　settlement　of　each　part　of　the　embankment　and　the　maximum　lateral　displacement　of　the　embankment　are　investigated.　The　results　show　that　the　four　factors　have　effects　on　the　pile　settlement,　the　surface　settlement　of　the　filling　soil,　the　displacement　of　the　soil　between　piles　and　the　maximum　lateral　displacement　of　the　embankment.