Abstract: In order to investigate the relationships of redrying temperature with the releasing components and quality of tobacco, a device was designed for trapping the components released from tobacco during redrying. The releasing components of upper and middle tobacco leaves from Henan, Yunnan and Guizhou were trapped during redrying, then qualitatively and quantitatively analyzed by automatic thermal desorption-gas chromatography/mass spectrometry(ATD-GC/MS). The results showed that: 1) The amounts of components released from tobacco decreased with the descending of temperature in drying section of redryer, and their correlation was distinct. 2) The effects of redrying temperature on leaves from different growing areas differed obviously. The experimental results provide a reference for setting redrying parameters specific to tobacco leaves from different growing areas.