The degradation of pigment and the change of smoking quality of flue-cured tobacco caused by the curing process were studied by using different circulating ventilators and the according curing-procedures. The results indicated that chlorophyll a and chlorophyll b contents in the three-speed circulating ventilator treatment were 5.10 μg/g and 167.74 μg/g, which were 92.49% and 95.47% of that of the single-speed treatment while Lutein, β-carotene and carotenoid content were 0.84, 155.56 and 156.40 μg/g, which were 86.40%, 95.53% and 95.47% of that in the single-speed treatment. There were significant differences in Chlorophyll a, chlorophyll b and chlorophyll a/b contens in cured leaf between the two ventilator treatments. The difference was extremely significant in β-carotene and carotenoid. There was no obvious difference in lutein and Car/Chl. The smoking quality of the three-speed circulating ventilator treatment was better than the single-speed treatment.