Taking　Y-column　double　subway　station　of　Xinhua　Street　Station　in　public　areas　of　the　Beijing　Metro　Line　6　as　engineering　background,　the　numerical　model　was　developed　with　FLAC3D　finite　difference　program,　and　the　seismic　response　characteristics　of　the　super-shallow　and　large-span　Y-shaped　column　double-layer　subway　station　were　analyzed.　The　results　show　that　the　site　soil　has　obvious　amplification　effect　on　ground　motion,　and　the　relative　horizontal　displacement　and　acceleration　of　the　upper-part　are　greater　than　those　of　the　lower-part　on　the　sidewall　and　Y-shaped　column.　Under　artificial　wave,　the　relative　horizontal　displacement　of　the　bottom　of　the　side　wall　and　Y-shaped　column　is　very　small,　and　the　weak　contra-arch　phenomenon　even　occurs　on　the　bottom　of　the　Y-shaped　column.　For　the　vertical　displacement,　the　right　fork　of　Y-shaped　column　is　significantly　greater　than　that　of　the　left.　For　the　horizontal　stress,　the　top　of　fork-branch　is　much　greater　than　that　of　other　parts,　and　the　stress-schedule　of　both　sides　of　fork-branch　has　an　obvious　hysteresis　phenomenon.　The　acceleration　Fourier　spectrum　relates　to　station　depth,　intensity　of　earthquake　wave　and　the　characteristics　of　seismic　waves.　The　Fourier　spectrum　value　gradually　decreases　with　the　increase　of　depth　of　station　and　the　low-frequency　Fourier　is　gradually　prominent　and　producing　sub-frequency.　At　the　same　time,　with　the　increase　of　station　structure　buried　depth,　the　Fourier　value　of　hypo-primary　frequency　increases　gradually　and　the　peak　frequency　of　the　spectral　curve　remains　unchanged.　©,　2015,　Central　South　University　of　Technology.　All　right　reserved.