Abstract: This paper proposes a new method to solve the problem of color constancy in the scenarios of non-uniform spectral power distribution of multiple light sources.First,the image is divided into several smaller patch;then according to the regional contribution to the color of the scene illuminant,it is combined into a composite light source color as the color of the scene illuminant estimation of myopia;finally the image is restructured the diagonal model.The quantitative experiments show that the proposed method can better solve the non-uniform light illumination scene.