The　center-hung　scoreboard　is　large-scale　display　device　flexibly　suspended　in　the　center　of　the　gymnasium.　The　influence　of　center-hung　scoreboard　on　seismic　response　of　single-layer　spherical　reticulated　shell　is　not　clear.　In　this　paper,　the　FEA　models　of　coupling　systems　composed　of　single-layer　spherical　reticulated　shell　and　center-hung　scoreboard　are　established.　The　seismic　responses　of　coupling　systems　are　calculated　by　explicit　dynamic　time　history　method.　The　seismic　responses　of　the　coupling　systems　are　compared　between　the　flexibly　suspended　case　and　the　simplified　case　where　the　scoreboard　is　simplified　as　fixed　mass　of　the　support　platform.　The　effects　of　the　sling　length　and　the　scoreboard　weight　on　seismic　responses　of　the　coupling　systems　are　also　discussed.　Compared　with　the　simplified　case,　peak　values　of　displacements,　accelerations　and　axial　force　are　significantly　different　when　the　scoreboard　is　flexibly　suspended.　The　treatment　method　of　simplifying　the　scoreboard　as　fixed　mass　of　the　support　platform　is　dangerous.　The　sling　length　and　the　scoreboard　weight　have　significant　effects　on　peak　values　of　displacements,　accelerations　and　axial　forces　of　the　coupling　systems.　The　envelope　values　under　different　sling　lengths　and　different　weight　should　be　taken　as　seismic　response　results　for　structural　design.　Copyright　©　2022　by　Renjie　Liu,　Chao　Wang,　Guangyong　Wang　and　Xiongyan　Li.