A fiber aggregate in which some of the fibers are equipped with fibrils including fibrils extending in the thickness direction of the fiber aggregate and which is equipped with a network structure formed by portions of the fibrils where the fibrils have been bonded to themselves and/or to fibers at the ends thereof along at least one of the thickness directions of the fiber aggregate； a liquid-absorbing sheet-shaped object including the fiber aggregate； and a process for producing the fiber aggregate. Thus, it is possible to provide: a fiber aggregate in which fibrils are utilized to attain, in particular, excellent liquid diffusion in the surface and excellent liquid absorption in the inner part； a liquid-absorbing sheet-shaped object including the fiber aggregate； and a process for producing the fiber aggregate.藉由具備纖維之一部分沿纖維集合體之厚度方向延伸之纖絲之纖絲，且具有藉由於纖維集合體之厚度方向之至少任一端部具有纖絲彼此及纖絲與纖維之間之至少任一者結合之部分而形成之網絡構造之纖維集合體，及使用此之液體吸收性片狀物、以及該纖維集合體之製造方法，而可利用纖絲，提供尤其於表面之液體之擴散、內部之吸收優異之纖維集合體以及使用此之液體吸收性片狀物、以及該纖維集合體之製造方法。
