We　prepared　a　superhydriphilic　film　on　copper　by　a　facile　hydrothermal　method,　the　water　contact　angle　was　6°.　After　modified　with　fluoride,　the　surface　exhibits　superhydrophobicity　and　the　water　contact　angle　can　reach　156°,　the　sliding　angle　less　than　10°.　The　result　of　the　XRD　patterns　confirms　that　the　nano-structure　was　cupric　oxide.　The　SEM　shows　that　the　morphology　rely　on　the　temperature　and　reaction　time.　The　airs　among　the　nano　structures　and　the　fluoride　lead　to　the　superhydrophobicity.　When　the　film　was　put　down　the　water　with　varies　height,　the　superhydrophobicity　was　changed　even　to　a　superhydrophilicity.　The　reason　of　the　change　was　discussed　briefly.