In　order　to　study　the　acceleration　of　the　vibration　source　system　from　the　Fuzhou　Metro　and　to　analyze　the　propagation　law　and　attenuation　characteristics　of　the　soil　along　the　metro　lines,　the　vehicle-track　vertical　coupled　model　of　vibration　is　established.　Based　on　the　parameters　of　the　Fuzhou　Metro,　all　parts　of　the　system＇s　vertical　accelerations　are　counted　under　a　certain　speed,　and　the　effect　of　speed　alteration　is　analyzed.　The　analysis　results　show　that:　the　carriages　vibrate　with　their　natural　frequency;　some　areas　of　dominant　frequency　concentration　exist　from　the　bogie,　wheelset,　supporting　block　and　track　bed;　and　the　second　peaks　are　caused　by　high-frequency　contact　between　the　wheelset　and　supporting　blocks.　Track　fasteners　and　rubber　bearings　can　improve　anti-vibration　capability,　and　vertical　acceleration　increases　with　subway　speed,　while　damping　effects　tend　to　stabilize.　©,　2015,　Nanjing　University　of　Aeronautics　an　Astronautics.　All　right　reserved.