Development　of　ground　settlement　induced　by　shield　tunneling　was　simulated　by　3D　numerical　model.　Ground　settlement　in　both　transverse　and　longitudinal　directions　was　simulated　with　a　step-excavation　approach.　Based　on　Peck＇s　formula,　the　results　of　numerical　model　were　compared　with　in-situ　measurements　in　terms　of　settlement　trough,　which　showed　good　agreements.　It　is　proved　that　the　model　is　quite　effective　to　dynamically　simulate　the　ground　settlement　during　the　advance　of　shield　tunneling.