Abstract: In order to explore the accumulation of flue-cured tobacco leaf-scattered baking technology，The effects of different breathing equipment-intensive methods in the process of curing tobacco major chemical constituents of the dynamic changes．The result indicated that: tobacco hangs 、 tobacco clamping、leaf-scattered With three forms of tobacco curing process，leaf-scattered baking the accumulation of high pre-amylase activity, decreased activity in the latter part of relatively slow, after the end of tobacco curing the lower starch content; Chlorophyll degradation, tobacco hangs and tobacco clamping curing 24 hours before the drop by more obvious, leaf-scattered powder in 12 hours of the degradation of speed has not tobacco hangs and tobacco clamping, Degradation speed up after 12 hours; protein content of both the slow downward trend.