The　nature　of　the　pull-out　system　of　carbon　nanorope/polyethylene　(CNRP/PE)　composite　is　studied　by　using　molecular　dynamics　approach.　The　deformation　of　the　CNRP/PE　composites　in　pull-out　process　is　exhibited.　The　influence　of　twisting　deformation　on　the　interfacial　interaction　of　the　composites　is　investigated.　The　results　show　that　the　energy　of　the　pull-out　system　is　conserved;　and　the　interfacial　bonding　is　weak　resulting　in　a　sliding　failure　of　the　CNRP　inside　PE　matrix.