Oil　spill　may　cause　serious　pollution　of　the　marine　environment.　Unmanned　aerial　vehicles　remote　sensing　system　can　be　used　to　monitor　oil　spill　conditions.　In　order　to　identify　the　oil　spill　area　on　aerial　image　accurately,　the　first　step　is　oil　spill　region　segmentation.　The　paper　presents　an　image　segmentation　method　of　oil　spill　area　based　on　fuzzy　C-means　Algorithm.　Firstly,　according　to　the　color　characteristics　of　the　oil,　the　paper　selects　YCbCr　color　space　as　the　feature　space.　Then,　the　paper　uses　fuzzy　clustering　algorithm　to　divide　the　color　feature　space.　Finally,　according　to　oil　color　model,　the　paper　selects　clustering　result　as　the　segmentation　results　of　oil　spill　area.　Experiment　show　that　the　proposed　algorithm＇s　accuracy　for　oil　region　segmentation　of　calibration　attain　to　95　percent.