Abstract: The curing capability of loose tobacco curing barn were studied in 2004—2005 by testing the plane temperature, verticality temperature, wind speed and wind pressure of the loading room. The results showed that the plane temperature range of loading room could be controlled within 1℃ when the loading board were specification, the grade of slope of loading room were reasonable, the blower fan and wind pressure could match requirement and the blast volume in the loading room ≥1000m3/h. While the verticality temperature range in the loading room behaved that it were minimum at the stage of early yellowing, and the temperature range increased slowly from the mid stage of yellowing to the end of color fixing, and reduced again at the killing stage. But the verticality temperature range of loose tobacco curing barn were lower than the common bulk curing barn.