Geosynthetic　reinforced　pile　supported　embankment　is　a　new　ground　treatment　technology　developed　in　recent　years.　The　advantages　of　this　technology　include　several　aspects　such　as　reducing　the　number　of　piles,　decreasing　project　costs　and　increasing　speed　of　construction.　Finite　element　method　has　been　used　to　analyze　the　variation　of　stresses　in　geosynthetic　reinforced　pile　supported　embankment　due　to　high-speed　train　loading.　The　influence　on　the　stress　of　the　embankment　from　soft　soil　deformation　modulus,　elastic　modulus　of　piles,　elastic　modulus　of　geogrid　and　the　space　between　piles　are　analyzed.　It　has　been　proved　that　these　four　factors　above　have　certain　effects　on　the　stresses　in　soft　soil,　piles　and　geogrids.