To provide an article being manufactured at a low cost and being usable as a sheet-like bedrock bath in the article highly promoting the perspiration, being thin, lightweight and soft, and having water resistance and durability.

This radon-far-infrared radiation sheet is characterized in kneading 20-80% of radon radiation mineral powder material 1, 20-80% of far-infrared radiation mineral powder material 2, 30-80% of urethane binder and 0.5-3% of water, refining them into radon-far-infrared radiation mineral powder material mixture and rolling and molding the radon-far-infrared radiation mineral powder material mixture into a thin sheet-like shape.