To provide a radiological image conversion panel having excellent moisture resistance and little deflection capable of providing high-quality radiological images.

In this radiological image conversion panel having a fluorescent sheet that is achieved by forming a fluorescent layer on a transparent and moisture-impermeable sheet according to a vapor deposition method, the surface of the fluorescent layer is directly or indirectly covered by a metal thin film (metal foil or metal deposition layer) to insulate the fluorescent layer from water entering from the outside.