The purpose of the present invention is to provide an absorbent body manufacturing device which enables stably and reliably exercising control such that the mixing ratio of fibers constituting the absorbent body is a desired ratio, and which, by ensuring uniformity of the fiber blend, makes it possible to stably obtain predicted absorbent body performance. Specifically, a conveyance tube (4) comprises: a narrowed portion (45) in which the area of flow in the portion where a second inflow portion (42) is formed is less than the area of flow of the nearest portion upstream of where the second inflow portion (42) is formed in the conveyance tube (4) and a mixing space portion (46) which is linked downstream of the narrowed portion (45) in the conveyance tube (4) and is formed to have an area of flow greater than that of the narrowed portion (45), and which mixes a first absorbent body material (13) and a second absorbent body material (14) which have passed through the narrowed portion (45), and the conveyance tube (4) can freely supply to a molding device (5) the first absorbent body material (13) and the second absorbent body material (14) flowing out of the mixing space portion (46).La présente invention concerne un dispositif de fabrication de corps absorbant qui permet dexercer une régulation de manière stable et fiable, de sorte que le rapport de mélange de fibres constituant le corps absorbant soit un rapport souhaité et qui, en assurant lhomogénéité du mélange de fibres, donne la possibilité dobtenir de manière stable des performances prédites de corps absorbant. Plus précisément, un tube de transport (4) comprend : une partie rétrécie (45) dans laquelle la section découlement dans la partie où une seconde partie découlement entrant (42) est formée est moindre que la section découlement de la partie la plus proche en amont de lendroit où la seconde partie découlement entrant (42) est formée dans le tube de transport (4) et une partie despace de mélange (46) qu
