A device for producing an absorbent body includes a rotating fiber stacking drum that includes an adsorbent molding section configured to mold fluff pulp into an absorbent body having a desired shape. The rotating fiber stacking drum further includes a cylinder having an outer circumference on which the adsorbent molding section is formed, and paired side walls that close ends of the cylinder, respectively. The device for producing an absorbent body further includes a sucking means, which is configured to generate an air flow from the outer circumference side of the adsorbent molding section toward the inside of the cylinder by sucking air in the rotating fiber stacking drum. The sucking means is connected to each of two side walls of the rotating fiber stacking drum.
