Recently, a large amount of waterlogged wood is being excavated. However, their conservation takes much time. In order to shorted the operation period, higher alcohol method was used to examine the dimensional stability of waterlogged wood. Cetyl alcohol and stearyl alcohol were used. Experiment with waterlogged broad-leaf wood with water content of approximately 500per thousand showed that the shrinkage ratio of treated wood is less than 3per thousand and that the treated wood keeps its dimensional stability even under high humid condition. Compared with PEG method, treatment time was shortened. Moreover, since higher alcohol method is applicable to many kinds of objects such as fibers, textiles and metals, it is a promising method about which further research is required.