PM₁₀ and PM_2.5 from soil dust,construction dust,urban fugitive dust,catering sources,biomass combustion sources,industrial coal dust,and power plant coal dust were collected,and their carbon components,water-soluble ion components,and inorganic element components were analyzed to establish their source profiles.Studies have shown that the crustal elements Si,Ca,Al,and Fe are the main characteristic components of soil dust,among which Si is the component with the highest content and is also the marker component of soil dust.The contents of Si and Ca were higher in unorganized construction dust.Ca was regarded as an important element that distinguished unorganized construction dust from other sources,while the contents of OC and SO₄^2- in organized construction dust were higher than those in unorganized construction dust.The content of Ca in urban fugitive dust was relatively high,which indicated that urban fugitive dust was more affected by construction dust.The content of OC in the source profiles of biomass combustion sources was much higher than that of other components in the source profiles.In addition,the average contents of Cl^- and K were higher.K was the characteristic element of biomass combustion sources.