To evaluate the potential benefits of biomass use for air pollution control,this paper identified and quantified the emissions of major reactive organic compounds anticipated from biomass-fired industrial boilers.Wood pellets (WP) and straw pellets (SP) were bed to determine the volatile organic compound emission profiles for each biomass-boiler combination.More than 100 types of volatile organic compounds (VOCs) were measured from the two biomass boilers.The measured VOC species included alkanes,alkenes and acetylenes,aromatics,halocarbons and carbonyls.A single coal-fired boiler (CB) was also studied to provide a basis for comparison.Biomass boiler 1 (BB1) emitted relatively high proportions of alkanes (28.9％-38.1％ by mass) and alkenes and acetylenes (23.4％-40.8％),while biomass boiler 2 (BB2) emitted relatively high proportions of aromatics (27.9％-29.2％) and oxygenated VOCs (33.0％-44.8％).The total VOC (TVOC) emission factors from BB1 (128.59-146.16 mg/kg) were higher than those from BB2 (41.26-85.29 mg/kg).The total ozone formation potential (OFP) ranged from 6.26 to 81.75 mg/m3 with an average of 33.66 mg/m3 for the two biomass boilers.The total secondary organic aerosol potential (SOAP) ranged from 61.56 to 211.67 mg/m3 with an average of 142.27 mg/m3 for the two biomass boilers.The emission factors (EFs) of TVOCs from biomass boilers in this study were similar to those for industrial coal-fired boilers with the same thermal power.These data can supplement existing VOC emission factors for biomass combustion and thus enrich the VOC emission inventory.