To make it possible to manufacture an absorber having a reinforcing layer sandwiched between a plurality of accumulation layers with simple and compact equipment An accumulation material in an absorber mold at a first accumulation position and a second accumulation position disposed in this order on an outer peripheral surface of a fiber accumulating drum at intervals in a rotational direction of the fiber accumulating drum, and supplying a belt-shaped reinforcing layer formed of a nonwoven fabric or the like, passing over the absorber mold on the outer peripheral surface of the fiber accumulating drum and continuous in the rotational direction of the fiber accumulating drum between the first and the second accumulation positions to form, in the absorber mold, an absorber including a first accumulation layer accumulated at the first accumulation position, a second accumulation layer accumulated at the second accumulation position, and the reinforcing layer sandwiched therebetween.
