Single-layer　reticulated　shells　are　widely　used　as　roof　structures　of　gymnasiums.　However,　the　seismic　performance　of　the　single-layer　reticulated　shell　with　a　center-hung　scoreboard　(CHS),　which　is　a　kind　of　large-scale　display　device　suspended　on　the　roof　center　of　many　gymnasiums,　has　not　been　fully　studied.　In　this　paper,　the　influence　of　the　CHS　on　the　seismic　response　of　single-layer　reticulated　shells　is　investigated.　Single-layer　reticulated　shells　and　the　CHS-integrated　models　including　flexibly　suspended　models　and　simplified　models　are　established,　respectively,　using　the　Abaqus　software.　The　responses　of　integrated　models　are　calculated　by　an　explicit　dynamic　method　under　3D　seismic　action.　The　axial　forces　of　the　flexibly　suspended　case　and　the　simplified　case　where　the　scoreboard　is　simplified　as　fixed　masses　on　the　roof　structure　are　compared.　Compared　with　those　in　the　simplified　model,　the　axial　forces　of　some　shell　members　and　some　nodal　acceleration　in　the　flexibly　suspended　model　under　multiple　seismic　excitations　would　increase　by　as　high　as　125%　and　315%,　respectively.　It　turns　out　that　seismic　responses　of　the　single-layer　reticulated　shell　would　be　underestimated　if　a　simplified　model　was　used　for　seismic　response　analysis.　The　region　near　the　boundary　and　the　region　neighbouring　the　support　platform　members　are　the　most　affected　regions　due　to　the　combination　of　the　horizontal　swing　effect　and　the　vertical　impact　effect　of　the　CHS　under　multiple　seismic　excitations.