A storing container has a container body having a storage part and a bottom, the storage part having an opening in a distal end of the storage part, the bottom closing a basal end portion of the storage part, and a lid closing the opening in the distal end of the storage part. The storage part is made of a plastic film. The bottom is deformable between a first state and a second state. The bottom is convex in a direction from the distal end of the storage part to a basal end of the storage part in the first state.
