A　novel　tuned　liquid　damper　with　a　damping　net　and　a　sloped-bottom　(DNS-TLD)　is　proposed　as　an　alternative　to　traditional　tuned　liquid　damper　(TLD),　which　has　limitations　such　as　low　damping　efficiency　and　high　water　consumption.　By　combining　a　sloped-bottom　TLD　with　a　damping　net,　the　DNS-TLD　can　increase　liquid　sloshing　within　the　tank,　providing　a　greater　extra　damping　ratio　while　using　less　water.　To　demonstrate　its　seismic　reduction　process,　a　controlled　structure　equipped　with　a　DNS-TLD　mechanics　model　is　developed.　A　simple　method　is　proposed　for　estimating　the　total　equivalent　damping　ratio　of　DNS-TLD.　The　damping　performance　of　the　structure　equipped　with　DNS-TLD　is　compared　and　analyzed　with　other　types　of　TLD　using　single-frame　shaking　table　tests.　Experimental　findings　are　compared　with　numerical　simulation　results　to　substantiate　the　DNS-TLD　damping　law　and　the　accuracy　of　the　total　equivalent　damping　ratio　calculation　approach.　Subsequently,　seismic　dynamic　time　analysis　of　a　multi-story　structure　equipped　with　DNS-TLD　is　carried　out　to　verify　its　effectiveness　in　actual　structural　seismic　reduction　control.　Both　shaking　table　tests　and　numerical　simulation　results　demonstrate　that　DNS-TLD　is　superior　to　other　types　of　TLD　in　terms　of　damping　performance,　efficiency,　robustness,　and　engineering　applicability　by　effectively　combining　the　advantages　of　a　sloped-bottom　TLD　and　a　damping　net.　©　2023　Elsevier　Ltd