Abstract: In order to clarify the effect of curing process on the aroma components and sensory quality of flue-cured tobacco raw materials for heated tobacco products, the sensory quality of middle tobacco leaves with different curing processes was evaluated according to the sensory evaluation method of heated tobacco products. The content of aroma substances in pyrolysis flue gas was detected, and the relationship between the content of aroma substances in flue gas and the sensory quality was analyzed. The results showed that the contents of aroma components in pyrolysis flue gas of samples from different curing processes were different. Compared with H1 treatment, the contents of furans, organic acids, alkenes and esters in H2 treatment decreased by 3.63, 0.43, 0.30 and 0.87 percentage points, respectively. The contents of alkaloids, aldehydes and ketones, phenols and alcohols increased by 3.40, 1.45, 0.16 and 0.23 percentage points, respectively. The contents of furans, alkaloids, phenols, alkenes and esters in H3 treatment were decreased by 4.91, 1.22, 1.17, 0.50 and 1.04 percentage points, respectively. The contents of aldehydes and ketones, organic acids and alcohols were increased by 5.63, 2.05 and 1.15 percentage points, respectively. In terms of sensory quality, the scores of sensory quality of heated tobacco products from H1, H2 and H3 treatments were 76.9, 79.6 and 89.2, respectively, and the scores of H3 were significantly higher than those of H1 and H2. Redundant analysis and correlation analysis showed that H2 treatment was conducive to the accumulation of nicotine and affected the strength of heated tobacco products. The contents of megastigatrienone 3, DDMP and palmitic acid in H3 treatment were significantly increased, and megastigatrienone 3 was a typical aroma component in the pyrolysis release components, which was consistent with the distribution direction of taste, plumpness and aroma. On the basis of the eight-point curing technology, appropriately increasing the yellowing temperature and reducing the temperature at the stem drying stage was conducive to improving the sensory quality of flue-cured tobacco raw materials for heated tobacco products.