Through　analyzing　the　errors　introduced　by　Retinex　algorithms,　a　novel　enhancement　method　based　on　dual　Markov　random　field　model　(MRF)　was　proposed　to　improve　single　night　color　image　visibility.　Firstly,　an　edge-preserving　Gaussian-MRF　model　to　estimate　illumination　component　in　HSV　color　space　was　constructed.　The　reflection　component　obtained　by　Retinex　principle　was　corrected　through　gain/offset　method.　Then,　an　effective　Huber-MRF　model　to　optimize　the　result　was　constructed.　Finally,　after　the　color　space　conversion,　the　proposed　method　realized　the　night　color　image　enhancement.　The　results　show　that　this　method　has　the　characteristics　of　detail　preserving,　color　restoration,　Halo　effect　elimination　and　noise　suppression,　and　can　enhance　night　color　image　visibility　robustly.　©　2016,　Central　South　University　Press.　All　right　reserved.