WMH-1 series of wood special drying box, shell is made of steel and welded into the import of color-coated steel tile, wall uses high strength corrosion-proof aluminium, and using new type of thermal insulation material is filled between the plate. The interior is composed of an evaporator, fan, the furnace body, scattered wind pipe, a tide discharging device and a control box. The drying box of hot steam and combustion chamber completely separated operation, so the material to be dried is not change color, degeneration, degradation phenomenon