To provide a storing box restricting occurrence of dust, packaging member using the storing box and a method for manufacturing the packaging member performed when the sheet-like thermal developing photo-sensitive material stacked in a protective member is put into a light-shielding moisture-proof bag and the storing box storing the light-shielding moisture-proof packaging member is opened at its sealed part.

There is provided a storing box having a parallelopiped cylindrical shape for a sheet-like thermal developing photo-sensitive material composed of a container main body having a parallel-piped cylindrical shape for storing a light- shielding moisture-proof packaging member having the sheet-like thermal developing photo-sensitive material put in a light shielding moisture-proof packaging member, and a lid part integrally assembled to the top surface of the container main body through a hinge part in such a way that it can be opened or closed. When the lid part is closed, it is engaged with a side wall held between the two side walls of the container main body.