Eutectogels　are　emerging　as　soft　material　with　great　promise　for　application　in　soft　electronics.　However,　they　are　generally　unable　to　maintain　autonomous　self-healing　and　adhesiveness　in　submerged　and　humid　environments,　which　causes　some　limitations　to　their　applicability.　Moreover,　they　often　fail　to　undergo　closed-loop　recycling,　due　to　the　general　presence　of　chemical　cross-linking.　Here,　a　amphiphilic　eutectogel　synthesized　via　a　one-step　photopolymerization　strategy　within　a　tailored　deep　eutectic　solvent　(DES)　system,　employing　purely　physical　cross-linking　mechanisms.　Underwater,　nanoscale　phase-separated　structures　(similar　to　14.6　nm),　triggered　by　hydrophobic　aggregation　in　solution,　arise　from　dominant　hydrophobic　interactions　among　polymer　chains.　These　distinct　domains　facilitate　efficient　water　drainage　at　the　gel-substrate　interface　and　impart　excellent　water　resistance.　The　resulting　eutectogel　exhibits　autonomous　self-healing　and　robust　adhesion　in　both　air　and　underwater　environments.　The　eutectogel　could　achieve　closed-loop　recycling　without　affecting　their　mechanical　properties　and　adhesive　performance.　By　finely　tuning　the　dynamic　interactions　between　polymer　chains　and　DES,　the　gel　achieves　a　physically　crosslinked　polymeric　network　with　enhanced　mechanical　resilience　and　environmental　stability　across　broad　temperature　ranges.　The　DES　acts　as　a　medium　for　monomer　polymerization,　facilitating　synergistic　interactions　and　homogeneous　phase　distribution,　enabling　synergistic　interactions　between　hydrophilic　and　hydrophobic　monomers,　offering　a　universal　strategy　for　eutectogel　fabrication.　The　presence　of　freely　mobile　ions　allows　the　gel　to　function　as　both　a　strain　and　pressure　sensor　in　air　and　underwater,　including　applications　in　human　motion　sensing　and　information　transmission,　highlighting　its　immense　potential　for　multifunctional　sensing　and　wearable　systems.