The　typical　biomass　fuels　in　Beijing　(made　of　corn　cob,　corn　stalks,　soybean　stalks,　straw　stalks,　pine,　chestnut　branches,　peach　branches)　and　civil　coal　(bituminous　coal,　honeycomb　coal)　were　selected　and　combustion　experiments　were　simulated　in　the　laboratory.　After　collecting　particulate　matters　and　gas　samples　from　combustion,　organic　carbon　(OC)　and　elemental　carbon　(EC)　in　different　particle　size　fractions　of　particulate　matter　were　measured　by　Model　2001A　Thermal/Photocarbon　Analyzer,　and　the　VOCs　in　combustion　flue　gas　were　analyzed　with　Agilent　GC-MS　5977/7890B　GC-MS　as　well.　The　results　showed　that　for　honeycomb　coal,　the　emission　factor　of　OC　and　EC　reached　the　maximum　with　the　particle　size　of　2.5~10μm,　for　all　the　other　8solid　fuels,　the　emission　factor　of　OC　and　EC　were　maximum　with　the　particle　size　of　0~2.5μm.　The　composition　of　VOCs　from　the　combustion　of　these　three　types　of　fuels,　firewood　(chestnut　branches,　peach　branches　and　pine),　straw　(corn　cob,　corn　stalks,　soybean　stalks,　straw　stalks)　and　civil　coal　(honeycomb　and　bituminous　coal),　are　quite　different.　The　mass　fractions　of　halogenated　hydrocarbons　and　oxygenated　organic　matter　emitted　from　firewood　and　civil　coal　combustion　are　significantly　higher　than　that　from　straw　type　fuels.　Within　each　fuel,　VOCs　composition　is　relatively　similar.　The　average　total　VOCs　emission　factor　was　2.02g/kg　for　the　firewood　type,　6.89g/kg　for　the　straws,　and　2.03g/kg　for　the　civil　coals.　VOCs　from　corn　cob,　corn　stalk,　soybean　and　straw　stem　have　higher　ozone　formation　potential　than　that　from　chestnut,　peach,　pine,　bituminous　and　honeycomb,　nonetheless,　the　composition　was　similar　among　the　latter　group.　The　VOCs,　such　as　Alkenes,　alkanes　and　aromatic　hydrocarbons　from　solid　fuel　combustion,　were　big　contributors　to　the　ozone　formation　potential.　©　2019,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.