To electric as heat source, the whole computer automation control, truly realize automation management. High frequency cabinet output power between 30-50KW. In the drying process, vacuum pump start can quickly wood surface water suction, discharged to the outside of the tank, and the tank body, so as to achieve - 7 to 8 a big pressure, heating system of automatic start, high frequency wave in wood fast internal motion, the friction heat is generated, the wood from the inside to the outside, from outside to inside the whole heating and heat rose by an average of. The vacuum and heating system can be automatically circulating, until the moisture content of the wood is reduced to a qualified. The device has a very significant effect on the hard wood of 5 cm.