About factory producing wood dryer wood drying box, drying timber for the main components using snail blowers, axial fans. Reversible axial fan with an arbitrary, high temperature, corrosion, moisture, etc., with the hot steam boiler (no pressure) can produce large amounts of atmospheric vapor - operator does not have a fireman operating permits, and they do not filing , subjects. Each system is flexible and adjusted according to the drying process of wood, curved wood appears to solve the drying process, the deformation within the crack, split end, table crack, deformation, discoloration and other defects, while the parasitic worms in the timber and all kill all the eggs to solve the adverse effects arising due to worms. Which means snail return air fans realized drying medium heat recovery fully utilized, minimize the drying costs, maximize economic efficiency of enterprises. Shell is made of pressed wood drying box 鼔 steel tile, used between the inner and outer panels aluminum plates and glass wool padding. Overall by steaming equipment, fans, furnace, scattered wind pipe, exhaust tidal device and the control box and other components. Leading to hot steam wood drying box is completely isolated and separated from the combustion chamber is thus run dry material does not appear discoloration, degeneration and other phenomena.