Superhydrophobic　materials　have　been　extensively　investigated　for　their　ability　to　separate　oil/water　mixtures,　but　their　fragile　durability　has　limited　further　development　in　this　field.　In　this　study,　a　durable　superhydrophobic　wire-cotton-based　material　(SWCM)　was　prepared　by　weaving　metal　wire　and　cotton　fiber　and　modifying　it　with　a　mixed　poly(vinyl　phenol)　(PVPh)/1,3-phenylene　bisoxazoline　(PBO)　solution,　which　exhibits　both　macro-frame　and　micro-aperture.　The　SWCM　demonstrates　remarkable　separation　efficiency　(greater　than99.98　%)　for　a　variety　of　water-in-oil　emulsions　using　only　gravity　drive.　More　importantly,　computational　fluid　dynamics　(CFD)　simulations　were　conducted　to　investigate　the　separation　mechanism　of　SWCM,　revealing　dynamic　trajectory　and　volume　changes　of　water　droplets　in　real-time.　Moreover,　the　micro-aperture,　protected　by　the　macro-frame,　can　withstand　hundreds　of　impacts　and　abrasions　and　still　maintain　reliable　separation　efficiency.　Under　the　encapsulation　of　micro-apertures,　the　macro-frame　exhibits　excellent　corrosion　resistance　and　can　maintain　stable　superhydrophobicity　even　after　long-term　immersion　in　different　harsh　solutions.　Due　to　its　excellent　durability,　the　SWCM　can　maintain　a　long　service　life　in　oil–water　separation　in　complex　environments.　Therefore,　the　presented　SWCM　has　great　potential　in　the　development　of　durable　and　efficient　materials　for　emulsion　separation.　©　2023　Elsevier　B.V.