Abstract: The atomization image fog background suppression is an effective technique to improve the quality of image resolution and fog imaging, in the dense fog environment, the fog atomizing image is affected by the interference of dark colors, the defogging effect is not good. An optimized mage background suppression algorithm is proposed under the guidance of atomization characteristics. By the light of atomization image smoothing, using dark channel characteristics of image enhancement method to suppress the atomization of image background, using dark channel characteristics of atomization image enhancement method to achieve improved suppression algorithm of atomization image background, image resolution is improved. The simulation results show that, using this method to suppress the background fog atomization image, it can smoothly fitting image atomization point, reduce the normalized least square error of the image, it can improve the efficiency of the fog.