Collaborative　disposal　of　sludge　has　been　applied　extensively　in　cement　industry　kilns,　but　the　influence　of　organic　components　in　sludge　on　the　selective　non-catalytic　reduction　(SNCR)　denitrification　is　still　in　highly　demanding.　This　paper　focuses　the　influence　of　ethanol,　n-octane,　benzene,　and　acetone　on　the　SNCR　denitrification,　and　the　influence　of　ethanol　are　analyzed　on　SNCR　denitrification　under　different　flue　gas　condition.　The　result　showed　that　the　presence　of　organic　components　reduces　the　reaction　temperature　of　SNCR.　When　the　temperature　of　SNCR　reaction　is　at　750　similar　to　800　degrees　C,　the　denitrification　rate　of　four　organic　components　is　ethanol　＞　benzene　＞　n-octane　＞　acetone.　The　optimum　denitrification　rate　on　SNCR　can　reach　as　high　as　90.377%　when　the　reaction　condition　is　the　NH3/NO　is　1;　the　ethanol　concentration　is　1000　ppm;　O-2　concentration　is　2%;　and　temperature　is　750　degrees　C.　The　presence　of　carbon　dioxide　inhibits　the　denitrification　reaction.　With　the　increase　of　temperature,　the　influence　of　SO2　on　the　denitrification　reaction　first　increases　and　then　decreases.　In　this　paper,　the　influence　of　organic　components　in　sludge　on　SNCR　denitrification　will　be　analyzed,　which　provides　a　theoretical　basis　for　the　selection　of　sludge　dosing　method　for　cement　kiln　collaborative　disposal.