This　study　investigates　the　frictional　sliding　performance　of　the　naturally-aged　laminated　rubber　bearings　after　serving　for　years.　Seven　laminated　rubber　bearings　that　had　served　for　10　years　in　an　existing　bridge　were　selected　for　the　frictional-sliding　tests,　based　on　which　multiple　issues　were　analyzed　and　evaluated,　including　the　frictional-sliding　patterns,　horizontal　elastic　stiffness,　friction　coefficient,　and　energy　dissipation　capacity　of　the　naturally-aged　bearings　under　varying　vertical　compressive　stresses.　It　is　shown　that　although　the　laminated　rubber　bearings　selected　for　tests　had　the　same　service　life,　they　displayed　different　degrees　of　aging.　As　the　vertical　compressive　stresses　increase,　the　friction　coefficients　decrease,　whereas　the　horizontal　elastic　stiffness　gets　increased.　The　shear-compression　interactions　have　a　minor　impact　on　the　energy　dissipation　capacity　of　the　naturally-aged　laminated　rubber　bearings,　but　it　must　be　noted　that　the　cumulative　frictional　sliding　would　suppress　the　energy　dissipation　capacity　of　the　bearings.　Compared　with　the　unaged　bearings　(theoretical　values),　the　surface　friction　coefficients　(experimental　values)　of　the　naturally-aged　laminated　rubber　bearings　are　lower,　but　the　horizontal　elastic　stiffness　is　remarkably　higher.　The　increase　in　horizontal　elastic　stiffness　in　naturally-aged　bearings　is　substantially　greater　than　that　observed　in　artificially-aged　bearings,　indicating　that　studies　on　artificial　aging　significantly　underestimate　the　detrimental　effects　of　natural　aging　on　these　bearings.　©　2024　Wuhan　Bridge　Media　Co.,　Ltd.,　MBEC.　All　rights　reserved.