A　stable　superhydrophobic　copper　surface　was　obtained　by　radio-frequency　magnetic　sputtering　on　Si　(100)　and　quartz　substrates.　The　water　contact　angle　and　sliding　angle　of　the　superhydrophobic　copper　surface　were　160.5　degrees　and　3　+/-　1.9　degrees,　respectively.　Scanning　electron　microscopy　(SEM)　photos　show　that　the　superhydrophobic　surface　structure　comprises　many　uniform　nanocrystals　with　a　diameter　of　about　100　nm.　A　brief　explanation　of　the　formation　of　this　special　microstructure　and　the　mechanism　of　its　wettability　were　proposed.