PROBLEM TO BE SOLVED: To provide a desiccant rotor of a structure, in which such deformation, departure, occurrence of gaps caused by the repetition of the increase/decrease of a volume accompanying the abrupt moisture release of water vapor in the desiccant rotor of the prior art are suppressed.SOLUTION: A disk-like structure (3) in a wound state is fixed between an inner cylinder (1) and an outer cylinder (5), and the inner cylinder (1), the disk-like structure (3) and the outer cylinder (5) are integrally jointed by a multiplicity of radial spokes (6), thereby to provide a structure, in which the inter-layer peel seen in the disk-shaped structure of the prior art having a sector type division hardly occurs.
