The invention provides a UUV near sea surface visible light image defogging method. According to the method, (1), an original foggy image is acquired, and the minimum value of three color channels is solved and is recorded as M(x); (2), an improved method of M(x) and a quadtree segmentation method is utilized to solve global atmosphere light; (3), adaptive surface fuzziness of the M(x) is carried out; (4), an atmosphere scattering function is solved; and (5), a fog imaging physical model is utilized to solve a no-fog image which is outputted. According to the method, adaptive surface fuzziness of the minimum value image of the three color channels is carried out, each pixel has a respective convolution matrix, edges of a target object can be excellently kept, subsequent target identification, positioning and tracking are facilitated, moreover, for solving a problem of a local dark phenomenon after filtering, the global atmosphere light is utilized to roughly divide the image into a dark area and a bright area, and different radiuses are utilized for fuzzy processing. The method is advantaged in that the relatively good defogging effect is realized, and a sky halation phenomenon can be overcome.