Controlling　the　behavior　of　underwater　bubbles　on　a　solid　surface　and　establishing　the　contact　model　between　a　gas　bubble　and　a　solid　substrate　in　a　water　medium　have　great　significance.　Herein,　a　method　is　proposed　to　realize　the　reversible　switching　between　underwater　superaerophilicity　and　superaerophobicity　on　the　femtosecond　laser-induced　rough　polytetrafluoroethylene　(PTFE)　surface　by　controlling　the　trapped　air　layer　in　water.　The　original　femtosecond　laser-structured　PTFE　surface　is　superhydrophobic　in　air　and　superaerophilic　in　water.　After　vacuum-pumping　treatment,　the　trapped　air　layer　around　the　microstructures　of　the　underwater　superhydrophobic　PTFE　surface　is　removed,　leading　to　the　underwater　superaerophobicity　of　the　sample　surface.　The　trapped　air　layer　can　be　recovered　and　the　PTFE　surface　can　regain　the　underwater　superaerophilicity　by　drying　treatment　and　the　immersion　of　the　sample　in　water　again.　Such　a　round-trip　transition　can　achieve　the　bubble＇s　＂locating　capture＂　and　the　control　of　the　selective　passage　of　air　bubbles　through　a　perforated　rough　PTFE　sheet.　It　is　believed　that　the　resultant　underwater　superaerophobic　and　superaerophilic　surfaces　will　have　significant　applications　in　manufacturing　submarine　gas-collection　devices,　improving　the　chemical　reaction　between　liquid　reagent　and　gas,　and　avoiding　the　microchannel　blockage　caused　by　bubbles　in　microfluidics　and　biosensor　devices.