In　order　to　study　the　deformation　law　of　the　underground　continuous　wall　+　multilayer　support　system　of　deep　foundation　pit　in　Fuzhou　soft　soil　area,　the　deep　foundation　pit　of　the　Pan　Dun　station　of　Metro　Line　6#　in　Fuzhou　soft　soil　area　is　used　as　the　engineering　research　background.　The　body　deformation　and　the　internal　force　and　deformation　of　the　supporting　structure　and　the　surrounding　surface　settlement　are　dynamically　measured　and　the　measuring　results　are　analyzed.　The　research　results　show　that　the　horizontal　displacement　of　soil　and　wall　gradually　increases　with　the　increase　of　excavation　depth.　The　maximum　displacement　occurs　about　6m　away　from　the　basement,　then　gradually　decreases,　and　the　final　deformation　curve　is　＇bulging　type＇.　The　measured　subsurface　settlement　is　a　parabolic　type　of　lateral　surface　settlement.　The　maximum　settlement　occurs　at　7m　away　from　the　foundation　pit　wall.　The　maximum　settlement　is　about　0.29Hm,　which　is　0.3%Hm.　The　longitudinal　surface　settlement　is　roughly　linear;　the　multi-layer　support　is　supported.　The　supporting　axial　force　in　the　structural　system　changes　dynamically　with　the　earthwork　excavation　of　each　layer,　the　pouring,　installation　and　removal　of　adjacent　supports.　The　axial　force　of　the　upper　and　lower　layers　is　obviously　smaller　than　that　of　the　intermediate　support.　The　research　results　verify　the　reliability　and　rationality　of　the　design　of　the　deep　foundation　pit　supporting　structure-underground　continuous　wall　+　multi-layer　support　system,　and　have　certain　reference　for　the　design　and　construction　of　other　subway　line　sites　and　similar　foundation　pit　projects　in　Fuzhou　area.　©　2018　Lavoisier