A　bionic　super-hydrophobic　surface　has　a　multiple　micro-nano-binary　structure　(MNBS)　similar　to　the　lotus　leaf　surface　microstructure.　This　kind　of　surface　has　a　contact　angle　of　water　greater　than　150　and　a　roll　angle　smaller　than　5.　In　this　paper,　the　frost　deposition　phenomena　on　a　bionic　super-hydrophobic　surface　were　observed.　The　surface　has　many　micro　bumps　and　its　contact　angle　is　162.　The　formation　of　water　droplets,　the　droplet　freezing　process,　the　formation　of　initial　frost　crystals　and　the　frost　layer　structure　on　a　cold　bionic　super-hydrophobic　surface　under　natural　convection　conditions　were　closely　observed.　The　frost　layer　structure　formed　on　the　super-hydrophobic　surface　shows　remarkable　differences　to　that　on　a　plain　copper　surface:　the　structure　is　weaker,　looser,　thin,　and　easily　removed　and　most　importantly,　it　is　of　a　very　special　pattern,　a　pattern　similar　to　a　chrysanthemum,　a　frost　layer　structure　that　has　not　been　reported　before　to　the　best　of　the　present　authors　knowledge.　The　experimental　results　also　show　that　a　super-hydrophobic　surface　has　a　strong　ability　to　restrain　frost　growth.　The　frost　deposition　on　this　bionic　surface　was　delayed　55　minutes　when　compared　with　a　plain　copper　surface　under　the　conditions　of　a　cold　plate　temperature　of　-10.1　°C,　air　temperature　of　18.4　°C,　and　relative　humidity　of　40%.　A　theoretical　analysis　was　also　presented　to　explain　the　observed　phenomena.　©　2008　Wiley　Periodicals,　Inc.