【Objective】The curing technique of flue-cured tobacco variety NC297 introduced from America was optimized to process high-quality flue-cured tobacco in Kunming region， in order to provided basis for improving quality and economic benefit of flue-cured tobacco NC297. 【Method】The raw tobacco NC297 as material were processed with different curing techniques（T1， T1 and T3）. The processing conditions of T1 were as follows： dry-bulb temperature of 36 ℃ and psychrometric difference of 2-3 ℃ at yellowing stage， dry-bulb temperature of 44 ℃， and psychrometric difference of 10-12 ℃ at color fixing stage. The processing conditions of T2 were as follows： dry-bulb temperature of 38 ℃ and psychrometric difference of 2-3 ℃ at yellowing stage， dry-bulb temperature of 46 ℃ and psychrometric difference of 10-12 ℃ at color fixing stage. The processing conditions of T3 were as follows： dry-bulb temperature of 40 ℃ and psychrometric difference of 2-3 ℃ at yellowing stage； dry-bulb temperature of 48 ℃ and psychrometric difference of 10-12 ℃ at color fixing stage. Then the effect of different curing techniques on tobacco’s appearance quality， economic character， main chemical components and sensory quality was compared and analyzed. 【Result】The results showed that in terms of appearance quality， economic character， main chemical components and sensory quality， T1 treatment was optimal as for flue-cured lower leaves and T3 treatment was optimal as for flue-cured middle and upper leaves. These optimal flue-cured leaves were characterized by orange leaves， loose or slightly dense structure， less or more oil， strong or moderate color intensity. Furthermore， as for lower， middle and upper leaves， the green and variegated leaves accounted for 4.3%， 5.0% and 9.8%， respectively， and their yields were relatively higher， which were 777.0， 1082.2 and 915.7 kg/ha， respectively， and their high- and middle-class leaves proportion were aslo relatively higher， which were 76.62%， 88.59% and 88.90%， respectively. These optimal flue-cured leaves showed optimal coordination of chemical components， sufficient aroma， moderate physiological strength and clean aftertaste， and the score of sensory and smoking quality was relatively higher. 【Conclusion】Different curing techniques have different influences on qualitative characters of flue-cured tobacco from different parts of NC297 tobacco plant. Therefore， the matched curing technique should be chosen to obtain high-quality tobacco based on source of raw tobacco leaves in actual production.