Vacuum drying can result in reduced drying time and higher drying quality. This method is Worthy of studying further and spreading in certain area. The development of a wood vacuum drying technology has been discussed. The results of tests show that this kind of dryer is rationable in design and has good function, can meet the demand of scientific research on drying and small-scale production. Through the experiments. vacuum drying schedules of elm, Japanes ash, birch and basswood are worked out.