Dimensional stability of papers made from hardwood and softwood bleached sulfate pulps has been studied. This report deals with the effect of the sheets shrinkage during drying. The results obtained are summerized as follows : 1) Dimensional stability was directly related to shrinkage during drying in both cases of hardwood and softwood sheets. But the effect of the beating on dimensional stability differed between hardwood and softwood bleached sulfate pulp.2) When handsheets were prepared from unbeaten or slightly beaten pulps, dimensions of the sheets from softwood pulp were more changeable than those from hardwood pulp. As beating was greatly increased, dimensional stability of paper from hardwood pulp decreased more rapidly than that from softwood pulp. These results were caused by the difference of fiber morphology. In early stage of beating, softwood fibers were more flexible and easier in contact with each other than hardwood fibers, and therefore, paper prepared from softwood fibers was inferior in dimensional stability to those from hardwood fibers. In the range of low C.S.F., however, hardwood fibers were short in length and contacted with each other effectively, so sheets made from these fibers shrinked extremely during drying. Consequently, the paper thus obtained was very unstable in dimensional stability.3) The sheets dried under tension to prevent from shrinking were very stable in dimensional change when compared with the sheets dried without tension. Relations between shrinkage in sheet volume and dimensional stability differed in drying conditions. Fibers in the sheets dried under tension contacted with each other poorly because of preventing from shrinking.4) The handsheets dried under or without tension (1 st step drying) were immersed in water sufficiently, then they were dried again under either conditions (2 nd step drying). Properties of the sheets thus obtained were more affected by 2 nd step drying condition than 1 st step condition. In case of wet strengthen paper, however, effects of 1 st step drying condition were prominent.