Abstract: In order to explore the change of each neutral aroma component during curing, and reasonable and accurate bulk baking aroma technology, combined with bulk baking technologies of the current production areas, the effects of three different baking technologies on the content of each neutral aroma component of flue-cured tobacco (cv. NC55) in the flue-curing process were studied by GC/MS. The results showed that, on the whole, each neutral aroma component and total neutral aroma constituents ascended during cuing, which mainly produced and accumulated during the yellowing stage and color fixing stage. In addition to neopytadiene, under middle temperature and middle humility treatment, the content of each neutral aroma component and total neutral aroma constituents of flue-cured tobacco leaves were relatively higher than multistage middle temperature and middle humility treatment and middle temperature and middle humility treatment, meanwhile multistage middle temperature and middle humility treatment was slightly higher than middle temperature and high humility treatment. Considering each neutral aroma component and total neutral aroma constituents of flue-cured tobacco NC55, the aroma quality under middle temperature and middle humility treatment can be improved more than the other treatments.