Eucommia　ulmoides　residue　mainly　contains　lignocellulose　and　Eucommia　ulmoides　gum　(EUG),　the　comprehensive　utilization　of　these　components　could　not　only　help　waste　disposal　but　also　support　the　sustainable　development.　Lignocellulose　nanofibrils　(E-LCNFs)　with　varying　lignin　contents　were　isolated　from　the　residue　waste　produced　from　EUG　extraction　from　Eucommia　ulmoides　pericarp　using　p-toluene　sulfonic　acid　hydrolysis.　The　obtained　E-LCNFs　were　then　used　as　reinforcement　to　fabricate　EUG/E-LCNFs　composite　films,　which　were　then　characterized　and　the　wettability,　mechanical　and　water　vapor　barrier　properties　were　tested.　Meanwhile,　effect　of　lignin　content　on　the　performance　of　the　composite　films　was　also　discussed.　The　results　showed　that　limited　incorporation　of　E-LCNFs　as　well　as　the　presence　of　lignin　greatly　improved　the　water　contact　angle　(WCA),　mechanical　properties　and　vapor　barrier　property　of　the　composite　films.　Compared　with　the　pure　EUG　film,　the　composite　film　incorporated　4　%　E-LCNFs　with　lignin　content　of　17.53　%　presented　WCA　of　99.9°,　elongation　at　break　of　422.5　%　and　water　vapor　permeability　(WVP)　values　of　0.29　×　10−9　g/m/h/Pa　at　RH　of　75　%.　Additionally,　strawberry　preservation　experiments　demonstrated　that　the　EUG/E-LCNFs　composite　films　could　effectively　extend　the　shelf　life　by　reducing　weight　loss,　enabling　it　to　be　a　desirable　alternative　to　traditional　petroleum-based　food　packaging　materials.　©　2025　The　Authors