Aimed at the harmfulness of low visibility weather， using digital information method found the relationship between occurrence， development of haze and geothermal， and the change of atmospheric structure characteristics. Prediction and precaution of haze need to correctly grasp tumble state of the lower atmosphere near the earth and thermal structural features. The formation of haze both has anthropogenic emissions also has the release of underground pollutants and dirty gas caused by natural geothermal. And geothermal can be taken as premonitory information of haze weather forecast. To improve the atmospheric environment， people need to improve emissions technology， also need to study the natural sources of pollution problems.