Epidemiological studies found that atmospheric particulate matter,especially absorbable particulate matter (PM10) is one of pollutants harmful to human health.In recent years,particulate matter pollution in China is increasingly serious and PM10 has become the primary pollutants in Beijing and other cities.Therefore it is necessary to carry out epidemiological studies and health damage assessment on particulate matter.In human health damage assessment,human exposure level to PM10 is related to provide accurate exposure data for the exposure-response relationship,but also to the quantitative assessment of accuracy,thereby increasing human exposure assessment accuracy is crucial.Spatial distribution of particle concentration in China is different because of spatial difference of local economic level and geographical environment.Along with the urbanization acceleration in China,city population density is big,and population distribution is variable between and inter-city,thus resulting in different population numbers exposure to different concentration range of the population.Therefore,an accurate assessment of Chinas particulate matter level of human exposure is the basis and priority to assess the health loss of particle pollution.Using the high accuracy population and PM10 monitoring data,the project will study the human exposure to PM10 pollution in China,and analyze PM10 level of human exposure in different regions,typical area and big cities such as Beijing,and provide the basis for conducting the human health damage assessment.