Abstract: In order to resolve the flue-cured tobacco production in baking stage large amount of labor and a lot of space not to use the problem of the bulk curing barn. With the large down-draft bulk curing barn for test materials, used loose leaf inserted sign baking method to research baking effect of the down-draft bulk curing barn of the loose-leaf insert sign. The results showed that: the energy consumption of average baking 1 kg dry tobacco and the labor cost of loose-leaf bulk curing barn was 1.02 Yuan lower than the curing barn of hang pole, and the capacity increased 71%, the superior flue-cured tobacco proportion increased 0.36%. Then, the total sugar and reducing sugar of down-draft bulk curing barn of the loose-leaf were higher, the main chemical components were better. The down-draft bulk curing barn of the loose-leaf and the down-draft bulk curing barn of hang pole sensory evaluation in the same.