[Problem] To provide a disintegrative particle composition that has an optimal balance between tablet hardness and disintegrative properties, which are mutually irreconcilable properties, and that has a novel composition, as well as disintegrating tablets, etc. for pharmaceuticals or various food products, including the composition. [Solution] Provided are a disintegrative particle composition including, as an excipient, pulverized lactose and/or granulated lactose, and a disintegrating tablet for food products or pharmaceuticals, including the disintegrative particle composition, and, in particular, the disintegrating tablet for food products or pharmaceuticals has a hardness from 20 to 200 N, and a disintegration time in water of 1 to 60 seconds.