Frequent　oil-spill　accidents　not　only　cause　serious　and　long-term　damage　to　marine　ecosystems,　but　also　lead　to　a　huge　loss　of　valuable　natural　resources.　To　lighten　the　environmental　pollution　of　oil　spills　as　quickly　as　possible,　an　efficient　and　environment-friendly　approach　for　oil-water　separation　is　highly　desirable.　Herein,　a　facile　one-pot　room-temperature　approach　was　developed　for　large-scale　fabrication　of　covalent　organic　framework-coated　superhydrophobic　sponges　(sponges@COFs).　The　as-prepared　sponges@COFs　possessed　many　superior　properties,　including　superhydrophobicity　with　the　water　contact　angle　of　approximately　154.3°,　large　specific　surface　area　(153.059　m2/g),　high　porosity　of　the　network　structures,　as　well　as　good　mechanical　and　chemical　stability.　Taking　the　aformentioned　advantages　together,　the　superhydrophobic　sponges　showed　ultra-high　adsorption　capacity　for　oil　and　various　organic　solvents.　In　comparision　with　its　own　weight,　the　adsorption　amount　of　the　sponges@COFs　for　silicone　oil　was　up　to　150　times　and　for　toluene　was　125　times,　respectively.　Furthermore,　the　superhydrophobic　sponges　also　showed　fast　and　highly　efficient　oil-water　separation,　outstanding　flame　retardancy　and　recyclability.　In　addition,　the　sponges@COFs　were　successfully　applied　to　the　high-efficiency　removal　of　oil　suspension　from　industrial　waste　water,　firmly　confirming　their　application　prospect　in　industrial　wastewater　treatment.　©　2021　Elsevier　B.V.