Based on the materials of upper, middle and lower tobacco leaves planted in Yunnan and Henan Province, the changes in physical indexes, chemical components, and sensory quality under the conditions of 150~190 ℃ airflow temperatures of pneumatic drying were studied. The results showed that: ① at the higher airflow temperature, the Yunnan tobacco had better processing resistance and crush resistance; ② different airflow temperatures changed the flavor, the quality of aroma, mixed gas, irritancy, dryness and cleanness of the taste. The quality of aroma, mixed gas and delicate degree generally improved during 150~160 ℃ airflow temperature range, but the airflow temperature higher than 180 ℃ had negative effect on the taste; ③ the grey correlation analysis of chemical components and sensory quality showed that total sugar, total nitrogen and reducing sugar had a greater correlation with sensory quality.