Several　types　of　fuels,　including　coal,　fuel　wood,　and　biogas,　are　commonly　used　for　cooking　and　heating　in　Chinese　rural　households,　resulting　in　indoor　air　pollution　and　causing　severe　health　impacts.　In　this　paper,　we　report　a　study　monitoring　multiple　pollutants　including　PM(10),　PM(2.5),　CO,　CO(2),　and　volatile　organic　compounds　(VOCs)　from　fuel　combustion　at　households　in　Guizhou　province　of　China.　The　results　showed　that　most　pollutants　exhibited　large　variability　for　different　type　of　fuels　except　for　CO(2).　Among　these　fuels,　wood　combustion　caused　the　most　serious　indoor　air　pollution,　with　the　highest　concentrations　of　particulate　matters　(218　similar　to　417　mu　g　m(-3)　for　PM(10)　and　201　similar　to　304　mu　g　m(-3)　for　PM(2.5)),　and　higher　concentrations　of　CO　(10.8　+/-　0.8　mg　m(-3))　and　TVOC　(about　466.7　+/-　337.9　mu　g　m(-3)).　Coal　combustion　also　resulted　in　higher　concentrations　of　particulate　matters　(220　similar　to　250　mu　g　m(-3)　for　PM(10)　and　170　similar　to　200　mu　g　m(-3)　for　PM(2.5)),　but　different　levels　for　CO　(respectively　14.5　+/-　3.7　mg　m(-3)　for　combustion　in　brick　stove　and　5.5　+/-　0.7　mg　m(-3)　for　combustion　in　metal　stove)　and　TVOC　(170　mg　m(-3)　for　combustion　in　brick　stove　and　700　mg　m(-3)　for　combustion　in　metal　stove).　Biogas　was　the　cleanest　fuel,　which　brought　about　the　similar　levels　of　various　pollutants　with　the　indoor　case　of　non-combustion,　and　worth　being　promoted　in　more　areas.　Analysis　of　the　chemical　profiles　of　PM(2.5)　indicated　that　OC　and　EC　were　dominant　components　for　all　fuels,　with　the　proportions　of　30　similar　to　48%.　A　high　fraction　of　SO(4)(2-)　(31　similar　to　34%)　was　detected　for　coal　combustion.　The　cumulative　percentages　of　these　chemical　species　were　within　the　range　of　0.7　similar　to　1.3,　which　was　acceptable　for　the　assessment　of　mass　balance.　(C)　2010　Elsevier　Ltd.　All　rights　reserved.