Abstract:Abstract Atmosphere fine particulate matter (PM2.5) is one kind of environmental atmosphere pollutants. PM2.5 in urban mainly come from industrial production, automobile exhaust and urban construction. With rapid economic development, more and more serious air particles cause a range of adverse health effects. From current published papers, the results suggested that exposure to fine particulate matter has been associated with decline in lung function for children and adults, increased hospital admissions and death rate of chronic obstructive pulmonary disease, and acute asthma episodes among adults. The mechanisms by which PM induced chronic obstructive pulmonary disease or asthma are largely unknown. Possibilities may involve the respiratory oxidative damage, inflammation, mucus secretion, as well as directly on the walls of the small airway injury induced by particulate matters. More research need in this area in the future.
