In　recent　years,　the　cost　of　road　maintenance　has　been　increasing　annually,　and　the　importance　of　preventive　maintenance　for　roads　has　been　gaining　more　attention.　Nevertheless,　due　to　the　varying　maintenance　times　and　long-term　performance　data　of　different　roads,　it　is　difficult　to　accurately　assess　the　benefit　of　different　preventive　maintenance　measures.　In　this　study,　the　thin　overlay,　slurry　seal,　chip　seal,　and　crack　seal　were　considered　as　preventive　maintenance　measures,　and　the　roughness,　rutting,　transverse　cracking,　longitudinal　cracking,　and　alligator　cracking　as　the　long-term　pavement　performance.　The　data　of　maintenance　measures　and　the　long-term　performance　of　pavement　was　selected　from　the　long-term　pavement　performance　(LTPP)　database.　The　dynamic　time　warping　(DTW)　algorithm　was　used　to　evaluate　the　long-term　performance　of　pavement　that　was　maintained　by　different　preventive　maintenance　measures　and　at　different　time.　Results　showed　that　the　thin　overlay　has　the　most　remarkable　improvement　effect　on　international　roughness　index　(IRI)　and　rut　depth　(RD)　of　pavement,　but　the　improvement　effect　of　the　other　three　maintenance　measures　on　the　long-term　performance　of　pavement　is　almost　the　same　and　relatively　small.　The　crack　seals　of　longitudinal,　transverse,　and　alligator　cracks　have　little　improvement　on　the　long-term　performance　of　the　pavement.　The　DTW　method　showed　excellent　superiority　in　the　evaluation　of　long-term　pavement　performance.　　©　2023　ASCE.