Abstract:Abstract: Comparative analysis on contents and proportions of aroma components degraded from chromoplast pigment and their relationships with smoking quality were conducted on flue-cured tobacco (C3F) leaves produced in Sichuan Huili, Chongqing Wulong, Hubei Baokang, Henan Ruyang and Shandong Zhucheng. The results showed that the contents of total aroma constituents, aroma components degraded from chromoplast pigment and chlorophyll, neophytadiene in the tobacco leaves displayed a descending trend from south to north with the highest contents identified in the leaves from Sichuan Huili and Chongqing Wulong and the lowest from Shandong Zhucheng. Among the aroma components degraded from chromoplast pigment, neophytadiene, megastigmatrienone, farnesene, β–damascenone, phytol and β–ionone showed higher proportions. Correlation analysis indicated that: among the aroma components degraded from chromoplast pigment, contents and proportions of the most components had positive correlation while geranylacetone, dihydro actinidiolide and farnesene B had negative correlation with smoking quality. Aroma components such as megastigmatrienone and geranylaceton were possibly the indicators that featured the flavor of flue-cured tobacco. The relationship between aroma components and smoking quality were complex, and diversity and difference existed in the internal quality of flue–cured tobacco leaves.