An　expansive　polystyrene　granule　cement　(EPSC)　latticed　concrete　wall　with　diagonal　bracing　is　formed　with　a　traditional　EPSC　latticed　concrete　wall　skeleton　with　added　diagonal　bracing.　It　is　a　new　model　of　non-demolding　wall　integrating　insulation　and　structure.　For　the　new　model,　the　length　of　one　EPSC　panel　is　1200　mm,　which　is　300　mm　longer　than　that　of　the　traditional　one.　The　diagonal　bracing　is　arranged　in　a　45　degrees　orthogonal　grid　in　the　new　model.　In　contrast,　the　traditional　type　has　only　horizontal　lattice　beams　and　vertical　lattice　columns.　Through　the　pseudo-static　test　of　two　new　EPSC　latticed　concrete　wall　specimens　with　diagonal　bracing　and　two　traditional　EPSC　latticed　concrete　wall　specimens,　the　seismic　performance　of　latticed　concrete　walls　was　investigated　in　this　study.　The　main　difference　between　the　specimens　was　the　lattice　form　and　the　core　hole　diameter.　Finite　element　simulation　was　carried　out　on　the　simplified　models　of　a　latticed　concrete　wall　with　diagonal　bracing.　The　results　showed　that　EPSC　could　work　with　post-poured　concrete　to　withstand　earthquake　action　together.　Additionally,　the　lateral　performance　of　the　EPSC　latticed　concrete　wall　with　diagonal　bracing　was　significantly　improved　compared　with　the　traditional　type,　and　the　overall　seismic　performance　was　improved,　especially　the　energy　dissipation　capacity,　which　increased　by　more　than　180%.　The　bearing　capacity　increased　by　more　than　12%,　when　the　amount　of　concrete　was　basically　the　same.　The　initial　stiffness　was　improved　by　more　than　52%.　As　the　diameter　of　the　core　hole　increased　20　mm,　the　bearing　capacity　improved　more　than　12%.　Simplified　modeling　methods　could　be　used　to　analyze　the　seismic　performance　of　latticed　concrete　walls　under　lateral　cyclic　loading.　The　study　reveals　the　seismic　performance　characteristics　of　latticed　composite　walls　with　different　lattice　forms　and　core　hole　diameters,　and　it　provides　technical　support　for　the　engineering　application　of　different　lattice　forms　and　core　hole　diameter　latticed　composite　walls.