The extractive free Japanese red pine sawdust was hydrolysed and the sugars produced was studied on the method of paper chromatography. Xylose, fucose, arabinose, galactose, rhamnose and mannose were detected chromatographically. It was supposed that xylose and fucose were main components of Japanese red pine hemicellulose and that uronic acids and oligosaccharides were also produced although they were not detected clearly.