Abstract: The object is to provide a moistureproof paper which is excellent in light-screening, moisture-proof, waterproof and heat-sealing properties and regeneration property at the time of reuse as a used paper, and in order to attain the object, a moisture-proof layer (3) of maceration, regeneration and heat-sealing properties is provided on the surface of a coated base (1) having a light-screening layer (2) of a hue of from 25 to 70 in terms of the luminosity index L* to obtain a moisture-proof paper having a light-screening and regeneration properties.