Abstract: The emission of pollutants in coal combustion process,especially organic pollutants,has received increasing attention. Based on the particulate matter sampling system,the filterable particulate matter (FPM),condensable particulate matter (CPM) and organic pollutants were measured and studied at the inlet and outlet of desulfurization tower (WFGD),wet electrostatic precipitator (WESP) and wet phase transition agglomeration system (WPTA) in a 280 t/h coal-fired unit. The pollutant removal characteristics of the devices were analyzed. The results show that CPM accounts for 80.94%-90.16% of the total particulate matter concentration. WFGD,WESP and WPTA can effectively reduce the emission of total particulate matter,and the total removal efficiency reaches 78.58%. The concentrations of polycyclic aromatic hydrocarbons (PAHs) in CPM are 64.17-126.40 μg/g,while the content of PAHs in FPM is only 7.52-11.21 μg/g. From the qualitative analysis of the organic compositions in CPM,it is found that alkanes are the main components,accounting for 42.11%-59.94% of the total organic matter,followed by esters,and other organic compounds,including aromatic hydrocarbons,acids,alcohols,ketones,et al.