First,the impact on the respiratory system; Second,effects on the cardiovascular system; Third,haze weather also can lead to formation of ultraviolet weakened near,Increasing the activity of the infectious pathogen in the air,and increasing the infectious diseases; Tourth,because of the fog lack,Children lack of ultraviolet irradiation,Vitamin D production decreases,the absorption of calcium also decreases,if Serious it can also cause rickets in infants,leading to children"s growth to slow down; Fifth,affect mental health; Sixth,influence of traffic safety