This study investigates the adsorption and desorption behaviors of press-dried wood. Chinese guger-tree (Schima superba) and Taiwania (Taiwania cryptomerioides) were used for this study. Treatment combinations of press drying for Chinese guger-tree were: T1P1 (174℃and 3.5kgf/cm^2), T1P2 (174℃ and 4.5 kgf/cm^2) T2P2 (150℃ and 4.5 kgf/cm^2), T2P3 (150℃ and 2.5 kgf/cm^2). Treatments of drying for Taiwania were air drying at 30℃ and 56% R. H. and press drying at 174℃ and 3.5 kgf/cm^2. The results of this study indicate that: 1. For Taiwania, the amount and the rate of adsorption and desorption for each treatment of press drying were smaller than those with treatment by drying. The results proves that the application of press drying reduces the sorption capacity. 2. For Chinese guger-tree, it was found that the higher the platen temperature, the smaller the amounts and the rates of adsorption and desorption. The results mean that the higher the temperature, the greater the reduction of sorption capacity. 3. The phenomenon of sorption hystersis was also obtained from the application of press drying and this phenomenon was stronger than that obtained from the application of air drying. 4. The application of press drying reduced the difference of the rate of adsorption and desorption between the tangential and radial faces.