A device for manufacturing an absorbent body includes: a shaping unit (30) that includes a recessed portion (71) and that makes liquid absorbent fiber (6) and superabsorbent polymer (SAP) to be deposited in the recessed portion (71), shaping the absorbent body (1) ； and a supply unit (20) that supplies the liquid absorbent fiber (6) and the superabsorbent polymer (SAP) to the recessed portion (71) . The recessed portion (71) includes a protruding portion (80), and the protruding portion (80) protrudes from a bottom surface and includes an inclined surface (82). In a cross section orthogonal to a ridge line of the protruding portion (80), an angle of the inclined surface (82) with respect to a surface parallel to the bottom surface is greater than an angle of repose of the superabsorbent polymer (SAP) and smaller than 90 degrees.
