The　main　objective　of　the　study　was　to　investigate　the　characteristics　of　dissolved　organic　matter　(DOM)　in　leachate　with　different　landfill　ages　through　the　chemical,　spectroscopic,　and　elemental　analysis.　Humic　acid　(HA),　fulvic　acid　(FA),　and　hydrophilic　(Hyl)　fractions　were　isolated　and　purified　by　the　XAD-8　resin　combined　with　the　cation　exchange　resin　method.　The　analytical　results　of　fluorescence　excitation-emission　matrix　spectroscopy　(EEMs)　revealed　that　the　fluorescence　peaks　were　protein-like　fluorescence　for　young　landfill　leachate,　while　the　fluorescence　peaks　for　medium　and　old　landfill　leachate　were　humic-like　and　fulvic-like　fluorescence,　respectively.　Elemental　analysis　showed　that　carbon,　hydrogen,　and　nitrogen　content　decreased　with　landfill　age,　while　the　oxygen　content　increased.　Moreover,　the　nitrogen　content　in　these　isolated　fractions　followed:　HA　＞　Hyl　＞　FA.　The　results　of　elemental　analysis,　FT-IR,　and　fluorescence　EEMs　also　confirmed　that　aromatic　carbons　and　portions　of　aliphatic　functional　groups　were　more　abundant　in　leachate　samples　with　increasing　landfill　age.