In　order　to　investigate　the　influence　of　substructures　on　the　seismic　performance　of　the　suspen-dome　structure,　taking　the　suspen-dome　roof　structure　of　the　Lanzhou　Olympic　sports　centre　complex　as　the　prototype,　a　method　that　replaces　complex　concrete　substructures　of　the　prototype　structure　with　steel　substructures　in　shaking　table　tests　was　proposed　and　a　scale　model　considering　substructures　was　established.　First,　the　natural　frequencies　of　the　test　model　were　compared　with　the　modal　analysis　results　of　the　prototype　structure　considering　the　scale　ratio.　Then,　an　integral　numerical　model　considering　substructures　was　established　using　Abaqus　-　the　results　of　modal　analysis　and　dynamic　time　history　analysis　were　compared　with　the　test　results.　Finally,　two　simplified　numerical　models　with　boundary　conditions　of　fixed　bearings　and　three-directional　hinged　bearings　were　established.　The　seismic　performances　of　simplified　models　and　the　integral　model　were　compared.　It　is　observed　that　the　method　of　considering　complex　concrete　substructures　of　the　prototype　structure　in　the　shaking　table　test　is　accurate　and　effective.　In　addition,　the　numerical　model　and　the　modelling　method　are　correct.　Moreover,　the　substructure　has　a　significant　impact　on　the　seismic　performance　of　the　suspen-dome.　The　substructure　should　be　considered　in　the　analysis　and　design　stages.