Taking　a　steel　symbolic　tower　with　wind　control　TMD　as　prototype,　this　paper　studied　the　seismic　control　effectiveness　of　TMD　systems.　Considering　that　earthquake　may　stimulate　more　structural　modes　than　one,　four　TMD　schemes,　namely,　without　TMD,　one　TMD,　two　TMD　and　three　TMD,　were　selected　respectively.　Firstly,　according　to　SAP2000　3D　model,　a　2D　serial　concentrated　mass　model　was　established.　Then,　the　modal　transfer　functions　of　structure　with　different　TMD　schemes　were　analyzed　and　calculated　to　study　the　influence　of　different　TMD　scheme　on　different　mode　response　indirectly.　Secondly,　31　earthquake　waves　were　chosen　to　study　the　seismic　control　effectiveness　of　different　TMD　schemes　directly　and　comprehensively.　Simulation　results　demonstrate　that　under　earthquake　waves　with　high　frequency　components,　the　high　frequency　modes　of　structures　will　be　motivated　and　in　this　case,　TMD　for　high　frequency　is　needed　to　improve　the　overall　control　effectiveness　of　TMD　system.