Abstract: In order to investigate the differences of the chemical components between cigarettes of different tobacco blends, cigarettes of nine brands, belonged to four price categories, manufactured by China Tobacco Guizhou Industrial Limited Corporation in 2015 were analyzed and characterized by means of factor analysis and curve estimation. The results showed that:1)Each brand had a representative comprehensive score curve of chemical component factors characterizing its overall quality of chemical components. 2)The upper part of the curve closely related to the aroma quality, comfortableness and price category of the cigarette; the lower part of the curve to the aroma quantity, strength and feeling of satisfaction of the cigarette. 3) This method was validated by the routine maintenance of cigarette blend, which indicated that it could objectively and effectively evaluate the variance of chemical components in cigarette blend and quality of the cigarette.