A　series　of　hydrophobic　surfaces　with　different　contact　angles　were　fabricated　by　chemical　etching　and　fluorination　modification,　the　largest　water　contact　angle　was　measured　to　be　155.2°.　Comparative　micro-observations　of　the　water　droplets　formation,　freezing　process　and　frost　crystals　growth　were　carried　out　on　both　the　hydrophobic　surfaces　and　the　plain　copper　surface　under　the　same　conditions.　The　experimental　results　showed　that　the　water　droplets　condensed　on　the　hydrophobic　were　smaller　and　present　a　more　spherical　shape　when　compared　with　that　on　the　plain　copper　surface.　The　freezing　time　of　the　droplets　on　the　hydrophobic　surface　was　later　than　that　on　the　plain　copper　surface.　Moreover,　the　frost　crystals　formed　on　the　hydrophobic　surface　were　sparse　and　can　thaw　quickly.　The　mechanism　of　surface　hydrophobicity　influence　on　droplets　frozen　and　frost　formation　was　analyzed　theoretically　based　on　the　phase　transition　theory.