To provide a light-shielding structure for a light-shielding photosensitive material roll which can maintain light-shielding performance even when applied with a shock of vibration or falling.

The light-shielding structure for the light-shielding photosensitive material which has the photosensitive material roll configured by winding a hollow core with a photosensitive material sheet, a couple of light-shielding flanges each comprising a cylinder part which is fitted onto a hollow part of the photosensitive material roll and a flange part which shades both the axial flanks of the photosensitive material roll, a couple of buffer members which support the photosensitive material roll where the light-shielding flanges are fitted through the light-shielding flanges, and a storage container which contains the photosensitive material roll where the light-shielding flanges are fitted while the roll is supported by the buffer members is characterized in that an elastic member which presses the storage container against a wall surface is molded integrally with the couple of buffer members.