An accommodating container includes a flexible pouch including a bottom portion and a side portion extending from the bottom portion so as to form an opening and a communicating member disposed inside the side portion on a side of the opening and provided with a communicating portion communicating between inside and outside of the pouch. The communicating member includes an opposite surface opposing the bottom portion, and the side portion includes a fold forming portion forming a folding shape along an edge portion of the opposite surface of the communicating member.