PURPOSE: To provide a method for manufacturing a rotating latent heat exchanger in which core shapes are uniform and a predetermined circular shape is obtained.

CONSTITUTION: Since the method for manufacturing a rotary latent heat exchanger manufactures the exchanger by the steps of forming a primary laminate 3 of a multilayer structure by alternately laminating planar base materials 2a and a wavy base material 2b via adhesive, obtaining a disclike secondary laminate by cutting the laminate 3 in a hole direction perpendicular to a laminating direction, and adhering a hygroscopic material into inner surfaces of the holes at least at the secondary laminate, the hole shapes obtained when both the materials 2a, 2b are laminated remain as they are, and all the hole shapes are obtained uniform in the exchanger, and a predetermined circular shape advantageous as a rotating type can be easily obtained.