The tree disk, which is cross cut from a log, for making wood artifacts and material for home-decorating, is a wood product with unique aesthetics character and artistic value, and also is one way to effectively utilize wood(especially crooked wood, small-diameter log etc.). to improve timber unit economic benefit and additional value. However, disk drying is much more difficult than drying lumber because of severe check problems. Therefore it's necessary to research the problem of disk drying. The thesis w...