Efficiently　cleaning　up　high-viscosity　crude　oil　spills　is　still　a　serious　global　problem.　In　this　paper,　a　composite　filler　PPy-polydopamine/BN　(PPB)　with　high　photothermal　effect　and　high　thermal　conductivity　was　first　prepared.　Then　the　polyurethane　sponge　is　decorated　with　polydimethylsiloxane　and　PPB　to　obtain　a　solar-assisted　isotropically　thermoconductive　adsorbent　(PPB@PU),　which　exhibits　remarkable　stability　and　durable　mechanical　properties.　Meanwhile,　the　PPB@PU　sponge　has　good　thermal　conductivity,　and　its　surface　temperature　rises　to　91　degrees　C　in　just　1　min　under　irradiation　(1　sun).　Therefore,　the　PPB@PU　sponge　can　quickly　heat　and　adsorb　the　crude　oil　contacted　by　the　surface,　significantly　speed　up　the　crude　oil　recovery　process,　and　the　adsorption　capacity　is　as　high　as　about　45　g/g.　Finally,　the　oil　adsorption　method　of　the　three-dimensional　adsorbent　is　demonstrated,　which　provides　a　new　idea　for　the　subsequent　development　of　advanced　oil　spill　adsorbent.