The　graphene　oxide　nanoribbons　were　prepared　by　oxidation　longitudinal　cutting　carbon　nanotubes,　and　the　graphene　oxide　nanoribbons/thermoplastic　polyurethane　composite　films　were　fabricated　by　solution　on　the　coating　machine.　FT-IR,　Raman,　XRD,　FE-SEM,　TEM　results　showed　that　the　carbon　nanotubes　had　been　successfully　cut　into　graphene　oxide　nanoribbons　of　banded　structure.　Mechanical　properties　showed　that　when　the　content　of　graphene　oxide　nanoribbons　was　2　wt%,　the　elastic　modulus　and　tensile　strength　of　composite　film　increased　by　160%　and　123%,　compared　with　the　pure　TPU　film.　The　oxygen　transmission　rate　of　TPU　film　declined　by　about　77%　at　low　graphene　oxide　nanoribbons　loading　of　2.0　wt%,　and　the　barrier　properties　has　improved　significantly.　©,　2015,　Journal　of　Functional　Materials.　All　right　reserved.