An object of the present invention is to provide a technique for accelerating the disintegration of solids (tablets, etc.) that need to be dissolved in a liquid during use without using a foaming agent, an acid component, or the like. The present invention provides a disintegrating particle composition containing fine fibrous cellulose, a disintegrating solid substance containing the same, and the like.本發明之課題在於提供一種用以使在使用時需要溶解於液體之固形物（錠劑等）不使用發泡劑及酸性成分等而加速崩解的技術。本發明提供一種含有微小纖維狀纖維素之崩解性粒子組成物及含有該組成物之崩解性固形物等。
