Ground　subsidence　induced　by　tunnel　excavation　has　a　certain　influence　on　surrounding　buildings　and　underground　pipelines.　Therefore,　controlling　the　deformation　of　the　foundation　of　the　buildings　in　an　allowable　range　is　much　important.　Based　on　the　comparison　of　the　measured　subsidence　with　the　numerical　simulation　results　of　10　typical　sections　tunneled　by　TBM　in　Line　10　in　Beijing,　the　estimate　method　of　calculation　parameters　and　an　improved　method　of　numerical　simulation　are　given.　Using　this　method,　the　deformation　regularity　of　the　foundation　of　the　surrounding　buildings　induced　by　a　tunnel　project　is　studied　under　the　condition　of　isolated　foundation,　strip　foundation　and　box　foundation　respectively.　It　is　found　that　the　scope　less　than　12m　of　the　distance　between　building　foundation　and　tunnel　axis　is　severe　influence　area,　12m　to　25m　is　influence　area,　more　than　25m　is　slight　influence　area　in　Beijing,　which　provides　technological　suggestions　on　judging　the　level　of　risk　source　and　the　necessity　of　special　evaluation.　Then　engineering　measures　for　reducing　the　impact　on　surrounding　environment　during　subway　construction　are　represented　according　to　those　three　influence　areas.　Finally,　a　typical　example　of　isolation　method　(diaphragm　wall,　soldier　pile,　jet　grouting　pile　and　grouting　stabilization)　for　controlling　the　subsequent　settlement　of　foundation　of　surrounding　building　is　expounded　and　the　effect　is　valuated.