PROBLEM TO BE SOLVED: To provide a base material for tablets capable of imparting excellent disintegration property and sufficient hardness to tablets, and a method for producing the same. SOLUTION: The base material for tablets according to the present invention is dried after absorbing 5 parts by mass or more and less than 100 parts by mass of water in 100 parts by mass of a fibrous fiber having an average fiber length of 20 to 1000 μm of a single particle. It is characterized in that it was obtained by making it.【課題】従来より優れた崩壊性と十分な硬度とを錠剤に付与できる錠剤用基材、及びその製造方法を提供する。【解決手段】本発明に係る錠剤用基材は、単一粒子の平均繊維長が20~1000μmの繊維状ファイバー100質量部に5質量部以上100質量部未満の水を吸水させた後、乾燥させることにより得られたことを特徴とする。