Abstract: In order to improve the quality of the upper leaves of flue-cured tobacco and the coordination of the internal chemical composition, the same maturity upper leaves of flue-cured tobacco were cured respectively by three curing technique. The three curing technique were the internal dynamic damper curing technique, the external dynamic damper curing technique and the three-stage curing process. The results indicated that, it was beneficial to improve the value by the internal dynamic damper curing technique with K326 in Chongqing, which made the content of total sugars and reducing sugars be the most closed to the suitable ranges, slightly increased the content of nicotine, reduced the starch content, and kept total nitrogen content sugar alkali ratio in appropriate range. The proportion of middle and superior tobacco leaves was 68.5%, average price was 13 yuan per kilogram.