This　study　aims　to　analysis　the　dynamic　characteristics　and　seismic　response　behavior　of　aluminum　alloy　reticulated　shell　structures　especially　pay　attention　to　the　internal　force　changes　in　the　elastic　and　elastic-plastic　stages.　A　scaled　test　model　of　aluminum　alloy　single-layer　spherical　reticulated　shell　was　designed　and　manufactured,　and　a　shaking　table　test　was　carried　out　to　obtain　its　dynamic　characteristics　and　seismic　response.　The　modal　parameters　of　the　reticulated　shell　structure,　including　frequency,　modal　shape　and　damping　ratio,　are　obtained　by　white　noise　scanning　frequency　and　frequency　domain　decomposition　(FDD)　technology.　The　response　of　the　reticulated　shell　structure　in　the　elastic　stage　and　the　elastic-plastic　stage　is　discussed,　including　the　node　acceleration,　displacement　and　strain　response　under　different　peak　ground　acceleration　(PGA).　The　finite　element　method　(FEM)　is　used　for　numerical　simulation　analysis.　An　effective　numerical　simulation　method　for　analyzing　the　seismic　performance　of　aluminum　alloy　single-layer　reticulated　shells　is　proposed.　The　internal　force　development　and　structural　displacement　of　structures　under　strong　earthquakes　are　studied.　The　test　results　show　that　under　the　action　of　horizontal　ground　motion,　the　vertical　stiffness　of　the　small　rise-span　ratio　aluminum　alloy　reticulated　shell　is　small,　and　the　radial　and　ring　members　mainly　bear　the　out-of-plane　bending　moment　and　axial　force.　In　addition,　the　horizontal　deformation　of　the　reticulated　shell　structure　and　the　in-plane　rotation　of　the　joints　are　the　main　reasons　for　the　members　to　enter　the　plasticity,　resulting　in　bending　and　torsional　deformation　of　the　members　in　the　weak　area.　Axial　pressure　and　bending　moment　control　the　force　mechanism　of　the　members,　which　is　the　cause　of　bending　and　torsional　instability　of　the　members.