The　oxidized　carbon　fibers　(OCF)　were　prepared　via　surface　oxidation　treatment　of　carbon　fibers　(CF)　in　concentrated　H2SO4/concentrated　HNO3　blend　acid,　and　then　OCF　were　modified　by　silane　coupling　agent　γ-methacryloxypropyl　trimethoxy　silane　(KH-570),　to　obtain　the　KH-570　grafting　modified　carbon　fibers　(KCF),　which　were　subsequently　applied　to　ethylene-vinyl　acetate　copolymer　(EVA)　foamed　composites.　The　surface　modified　characteristics,　the　structures　and　properties　of　carbon　fiber/EVA　composites　were　investigated　by　FTIR,　XPS,　Raman,　FESEM　and　electronic　universal　testing　machine　etc.　The　result　shows　that　both　oxidation　and　grafting　reaction　can　increase　the　content　of　active　functional　groups　and　roughness　on　surface　of　carbon　fiber,　which　can　improve　the　compatibility　between　carbon　fibers　and　EVA　matrix,　leading　to　improvement　on　physical　properties　of　carbon　fiber/EVA　foamed　composites.　Under　the　same　conditions,　the　KH-570　grafting　modified　carbon　fiber/EVA　foamed　composites　have　superior　physical　properties.　©　2016,　BUAA　Culture　Media　Group　Ltd.　All　right　reserved.