A　groove-shaped　array　with　average　25　μm　interval,　25　μm　wall　thickness,　75　μm　depth　and　a　columnar　array　with　average　30　μm　side　length,　25　μm　interval,　43　μm　depth　are　processed　by　1064　nm　picosecond　laser　on　polytetrafluoroethylene　(PTFE)　surface　at　room　temperature.　The　water　contact　angle　of　the　modified　PTFE　surface　is　167°　so　that　super　hydrophobic　surface　of　PTFE　is　prepared.　It　is　observed　that　the　super-hydrophobic　surface　reflects　metal　luster　underwater　through　the　glassware　when　the　super-hydrophobic　PTFE　is　entirely　immersed　in　pure　water.　The　experiment　conducts　that　the　super-hydrophobic　surface　can　enhance　reflection　intensity　of　visible　light　due　to　total　internal　reflection　of　super-hydrophobic　surface　underwater.