Abstract: In order to resolve the curing technology of loose tobacco curing barn, and spreading it in most tobacco planting area, the series of research of curing capability, technology of loading and curing technology on loose tobacco curing barn were studied. We found out the curing technology of loose tobacco curing barn when adopting nature loading method, the loading density were 75-85kg/m3, and the thermometer were hanged at the bottom layer. This technology was on the base of its own characteristic, it also integrated the technology of the three stage curing technique, and it had the virtue of simplicity of operation, earthliness and understandability, better curing effects, and preferably spreading foreground.