Vertical　vibration　tests　are　performed　on　two　typical　multi-floor　buildings　built　on　platforms　of　underground　subway　and　surface　subway　line,　the　responses　of　buildings　are　analyzed　by　means　of　acceleration　sat　the　measured　points　and　their　power　spectra　and　transfer　function.　Finally,　environmental　level　is　indicated　according　to　vibration　level.　Analytical　results　shows　that　the　multi-floor　building　vibrates　as　a　whole　body　when　it　is　subject　to　train-induced　excitations,　the　vibration　frequency　range　is　below　70　Hz.　For　the　building　along　underground　line,　it　can　be　clearly　seen　that　there　is　a　obvious　enhancement　of　vibration　level　as　the　floor　increases　from　the　base　to　the　fifth　one　and　the　vibration　levels　are　same　from　the　fifth　floor　to　the　top　one,　the　vibration　frequency　range　is　10-30　Hz.　The　response　of　the　buildings　on　the　surface　subway　line　is　different,　the　vibration　frequency　range　is　40-70　Hz　and　the　vibration　of　the　top　floor　is　more　intensive　than　other　floors.　Though　the　vibration　induced　by　surface　line　stronger　than　that　by　underground　line,　the　vibration　levels　are　both　below　the　thresholds　of　environmental　standards.　In　China,　there　is　little　information　on　the　buildings　built　along　surface　subway　lines,　more　studies　should　be　done.