To provide an article storage case which can be used for freezing as well and can be easily folded.SOLUTION: In a basic state, an inner case body 10 is in the inner case basic state in a rectangular parallelepiped shape, an outer case body 30 is in the outer case basic state in the rectangular parallelepiped shape as well and a lid body 260 is in the lid body basic state. In a folded state, the inner case body 10 is in the inner case folded state, the outer case body 30 is in the outer case substantially folded state and the lid body 260 is in the lid body both edges joined folded state. The inner case body 10 changes from the inner case basic state into the inner case folded state, thus, the lid body 260 changes from the lid body basic state into the lid body both edges joined folded state as well, the outer case body changes from the outer case basic state into the substantially folded state as well and this article storage case changes from the basic state into the folded state.SELECTED DRAWING: Figure 9B