In engineering practice, there is an increasing application of ram-compacted pile composite foundation for its economical and environmental consideration. In order to forward settlement property research of ram-compacted pile applied in high-speed railway deep soft ground treatment for the first time, and based on ram-compacted pile settlement data of trunk embankment near Beijing-Shanghai high speed railway Langfang station, this paper starts from 3D FEM analysis and provides the study on ram-compacted pile settlement characteristics. What more, settlement prediction using 3D FEM analysis is proved to be applicable and effective.