The invention relates to a method for representing style characteristics of tobacco by adopting characteristic indexes. The method comprises the steps that the characteristic chemical indexes of the tobacco are sifted and selected, the corresponding style characteristic indexes TQ of the tobacco are calculated, and the style characteristics of rhyme fragrance of raw materials of the tobacco are reflected through the TQ indexes; according to the computation of the TQ indexes, factors and related factor weight closely related to typical fresh scent tobacco are adopted, wherein the computational formula is: a TQ value=sigma(positive correlation factors*weight factors)/sigma(negative correlation factors* weight factors); the positive correlation factors are the indexes of the content higher than the other types of tobacco in the typical fresh scent tobacco, and the negative correlation factors are the indexes of the content lower than the other types of tobacco in the typical fresh scent tobacco; the typical fresh scent tobacco is tobacco Honghuadajinyuan; after the principal components of the tobacco is analyzed, the percentages of the characteristic values of all the principal components accounting for variance are the weight factors of the indexes closely related to the principal components; the larger the TQ value is, the more obvious the style characteristics of fresh scent are. The method has positive and important effects on scientifically identifying the style characteristics of the tobacco and effectively improving the use rate of the raw materials of the tobacco.