Abstract: The aim is to understand the relationship between flue- cured tobacco threshing and redrying processing and the structure of finished tobacco lamina. The computer information system was adopted to automatically collect 160 equipment parameters, to detect the structure of the corresponding finished tobacco lamina. The simple and typical correlation analysis was conducted. The results showed that there was a significant correlation between the first and second wetting temperature and the moisture and threshing strength and the cooling temperature, between the second wetting water addition and resurgence area 4, and between first wetting cylinder drive and the temperature of drying and resurgence cooling fan. There were significant typical correlations between the leaf wetting section, threshing and air separation section, redrying and drying section, and the structure of finished tobacco lamina. The details were as follows: (1)“the infiltration rate”in the first and second wetting process had a negative correlation with large leaf rate, small leaf rate, fragmentation rate, crushing rate and leaf stem rate, and it had a positive correlation with medium leaf rate; (2) the intensity in the threshing and air separation process had a negative correlation with large leaf rate, fragmentation rate and crushing rate, and it had a positive correlation with medium leaf rate; (3) the temperature of drying and resurgence cooling fan and the temperature of cooling zone were positively correlated with large leaf, and they were negatively correlated with medium leaf rate and leaf stem rate. Before redrying and drying, the moisture of the tobacco lamina was positively correlated with large leaf rate, and it was negatively correlated with medium leaf rate. Moisture removal of resurgence area 4 had a positive correlation with small leaf rate.