There has been a need for an orally rapidly disintegrating tablet which has a good texture and taste in the oral cavity, such a sufficient hardness as not giving any worry of being chipped or dusted during production or transportation and good disintegrating properties in the oral cavity and can sustain a sufficient hardness even under humid conditions after opening. Disclosed are a disintegrating particle composition which is prepared by dispersing, in the presence of water, mannitol, xylitol, an inorganic excipient, a disintegrating agent and carmellose and drying, and an orally rapidly disintegrating tablet which comprises said disintegrating particle composition, an active substance and a disintegrating agent. The disintegrating tablet has a good texture and taste, an appropriate hardness and good disintegrating properties and can sustain a sufficient hardness under humid conditions.