In　the　coastal　regions　of　Fujian,there　are　a　large　number　of　residential　buildings　constructed　from　stone,and　they　exhibits　poor　seismic　resilience.Stone　walls　are　the　main　load-bearing　and　lateral　force　resistant　components　of　stone　structures.Strengthening　stone　walls　with　UHPC　infilled　joints　can　improve　the　seismic　performance　of　stone　structures.To　explore　the　overall　seismic　performance　of　stone　structures　after　UHPC　infilled　joints,this　study　utilized　the　LS-DYNA　finite　element　software　to　establish　two　distinct　models　of　stone　structures:　one　without　reinforcement　and　another　reinforced　with　UHPC　infilled　joints.The　research　aimed　to　investigate　the　complete　seismic　failure　process,analyzed　the　seismic　response,failure　mechanisms,and　performance　of　the　structures.　Findings　reveal　that　the　stone　structure　exhibits　a　＇vertical　collapse＇　failure　mode　under　seismic　action.For　PGA　of　55　gal　and　110　gal,the　unreinforced　structures　exhibited　minor　to　complete　collapse,　whereas　the　reinforced　structures　showed　conditions　ranging　from　minor　damage　to　moderate　destruction.Compared　with　the　unreinforced　structure,the　fundamental　period　of　the　reinforced　stone　structure　is　slightly　reduced,the　peak　acceleration　of　floor　has　decreased　by　21.05%　to　25.26%,and　the　displacement　angle　was　reduced　by　74.90%　to　94.50%.The　infilled　joints　reinforcement　effectively　curtailed　stone　wall　cracking,mitigated　structural　damage,and　significantly　enhanced　reinforcement　effectiveness.　©　2024　Editorial　Board　of　Journal　of　Basic　Science　and　Engineering.　All　rights　reserved.