In　this　paper,　the　frost　deposition　phenomena　on　a　cold　super-hydrophobic　was　observed.　The　experimental　results　show　the　way　that　the　frost　crystals　grow　on　the　super-hydrophobic　surface　is　different　to　that　on　the　plain　copper　surface.　On　the　super-hydrophobic　part,　most　of　the　frost　crystals　grow　along　the　horizontal　direction　(parallel　to　the　surface)　and　finally　formed　ears　instead　of　the　normal　vertical　direction(normal　to　the　surface)　as　those　on　the　plain　copper　surface.　In　order　to　explain　the　phenomena　we　designed　a　droplet　freezing　test　on　the　super-hydrophobic　surface　and　the　copper　surface　each.　On　the　super-hydrophobic　surface　the　frost　crystals　grow　on　almost　every　position　of　the　ice　droplet　surface.　But　on　the　copper　surface　the　frost　crystals　grow　mainly　on　the　top　of　the　ice　droplet　and　along　the　vertical　direction.　The　frost　crystals　on　the　upper　position　of　the　droplet　thawed　and　fell　down　onto　the　crystals　of　the　lower　part　of　the　droplet　on　the　hydrophobic　surface　more　obviously　than　that　on　the　plain　copper　surface.　The　possible　theory　was　proposed　to　explain　the　observed　phenomena:　it　may　be　related　to　the　fact　that　the　electric　charge　distribution　is　non-uniform　on　an　isolated　conductor　surface.　©　2011　IEEE.