In order to establish rapid evaluation method of tobacco, cut stem and reconstituted tobacco, multiply ratios of sugars to alkali by potassium was selected as blending homogeneity evaluation index sign. Based on tobacco (500), cut stem (500), reconstituted tobacco (250) and the formula of tobacco production line (30) of the near-infrared spectral information and blending evenness index data, the pattern recognition model and the marker correction model of evenness index data of tobacco, cut stem and reconstituted tobacco were built. The results showed as follows. ① The overall information of near-infrared spectra of the three tobacco samples were differences. ② The average blending-uniformity indexes of tobacco, cut stem and reconstituted tobacco were 20.64%, 273.81% and 30.40% respectively. The blending-uniformity indexes of stem samples were greater than that of tobacco samples and stem samples in both value and fluctuation range. ③ When take the blending-uniformity index equal to 50 as the classification threshold, the PCA-MD of the three tobacco samples presented a good classification effect. ④ the results of internal parameters and external validation based on the model showed that, when the blending uniformity index equal to 50 was used as the classification threshold, the near-infrared correction model of the three kinds of tobacco blending-uniformity index before and after the study of blending presents better stability and accuracy.