PROBLEM TO BE SOLVED: To provide a method for processing packed boiled rice eatable as puffy delicious packed boiled rice like just-boiled rice when heat processing and eating packed boiled rice which becomes cool and lump in a boiled rice storage container, and a packed boiled rice loosening machine to be used for the same.SOLUTION: A method is for processing packed boiled rice which is boiled in a sterilized room followed by being stored in a boiled rice storage container 1, or subjected to sterilization treatment or deoxidation treatment followed by storage in the boiled rice storage container 1, or stored in the boiled rice storage container 1 followed by being subjected to sterilization treatment, and is capable of being preserved for a long period at normal temperature. The method for processing the packed boiled rice includes pressing to loosen into pieces, packed boiled rice 2 in the state of being cool and lump, stored in the boiled rice storage container 1, together with the boiled rice storage container 1 as being stored in the boiled rice storage container 1.COPYRIGHT: (C)2014,JPO&INPIT【課題】米飯収納容器内で冷えて塊状となったパック米飯を加熱処理して食する際に、炊き立てのようにふっくらとして美味しいパック米飯として食することができるパック米飯の加工方法並びにこれに用いるパック米飯ほぐし機を提供することを目的とする。【解決手段】無菌室で炊飯されて米飯収納容器1に収納された、または、殺菌処理若しくは脱酸素処理を施されて米飯収納容器1に収納された、或いは米飯収納容器1に収納された後で殺菌処理を施された、常温で長期保存が可能なパック米飯の加工方法であって、冷えて塊状となった状態で前記米飯収納容器1に収納されているパック米飯2を、前記米飯収納容器1に収納されたまま前記米飯収納容器1ごと押圧して、ばらばらにほぐすパック米飯の加工方法。【選択図】図1