The　total　length　of　the　main　channel　of　the　South-to-North　Water　Transfer　Project　is　1432　kilometers.　There　are　nearly　1,　000　supporting　mechanical　and　electrical　equipment　along　the　channel　gate　station.　At　the　same　time,　there　are　more　than　1,　000　main　roads　with　channel　crossing　roads　along　the　route.　Oil　spills　may　occur　due　to　various　reasons　such　as　equipment　leakage　or　traffic　accidents.　Entering　the　channel　directly　causes　pollution　of　water　quality.　The　pollution　of　water　quality　will　directly　endanger　the　health　of　human　beings.　Therefore,　it　is　essential　to　quickly　and　efficiently　remove　oil　pollutants　from　the　water　supply　channels.　This　paper　analyzes　the　basic　characteristics　of　the　Middle　Route　Project　of　South-to-North　Water　Transfer,　and　the　risk　sources　of　sudden　oil　pollution,　and　the　common　degreasing　devices　such　as　oil　booms,　oil　absorbing　pads,　and　oil　removal　devices　based　on　steel　structure　pontoons　in　the　main　trunk　The　applicability　was　analyzed.　The　results　show　that　the　traditional　oil-absorbing　felt,　oil　boom　and　other　degreasing　devices　have　poor　applicability　in　the　middle　line,　which　can　not　meet　the　requirements　of　the　mid-line　water　quality　and　channel　flow　rate,　and　the　adaptability　to　the　channel　engineering　characteristics　is　also　insufficient.　The　degreasing　device　based　on　the　steel　structure　pontoon　can　adapt　to　the　current　situation　of　the　midline,　and　has　good　effects　in　preventing　the　oil　film　from　escaping　and　splashing.　Therefore,　in　general,　the　degreasing　device　based　on　the　steel　structure　pontoon　is　suitable　for　the　midline　burst　oil.　Effective　measures　and　means　of　pollution　accidents.　©　The　Authors,　published　by　EDP　Sciences,　2018.