A multilayered structure having a liquid layer on a surface of a plastic underlying layer, wherein a liquid diffusion prevention layer is provided on a lower side of said underlying layer to suppress or block a diffusion of a liquid that forms said liquid layer, and wherein: - said liquid diffusion prevention layer is formed of a resin having a density of not less than 1.00 g/cm 3 and a glass transition temperature (Tg) of not lower than 35°C or of a resin having a crystallinity of not less than 0.5; - said multilayered structure is in the form of a container having said liquid layer formed on the inner surface thereof; and - said liquid layer maintains a covering ratio F of not less than 0.5 as calculated according to the following formula, F = cos θ − cos θ B / cos θ A − cos θ B wherein θ is a water contact angle on said inner surface of said multilayered structure, θ A is a water contact angle on the liquid that is forming said liquid layer, and θ B is a water contact angle on a simple plastic material that is forming said underlying layer; and further wherein either: (a) a gap is not more than 200 μ m between the surface of the underlying layer that is in contact with said liquid layer and said liquid diffusion prevention layer; or (b) said underlying layer contains a liquid that forms said liquid layer, said liquid serving as a source of feeding said liquid layer; or (c) between said underlying layer and said liquid diffusion prevention layer, there is, further, provided a liquid diffusion adjusting layer containing a liquid for forming said liquid layer. - said liquid diffusion prevention layer is formed of a resin having a density of not less than 1.00 g/cm 3 and a glass transition temperature (Tg) of not lower than 35°C or of a resin having a crystallinity of not less than 0.5; - said multilayered structure is in the form of a container having said liquid layer formed on the inner surface thereof; and - said liquid layer maintains a covering ratio F of not less than 0.5 as calculated according to the following formula, F = cos θ − cos θ B / cos θ A − cos θ B wherein θ is a water contact angle on said inner surface of said multilayered structure, θ A is a water contact angle on the liquid that is forming said liquid layer, and θ B is a water contact angle on a simple plastic material that is forming said underlying layer; and further wherein either: (a) a gap is not more than 200 μ m between the surface of the underlying layer that is in contact with said liquid layer and said liquid diffusion prevention layer; or (b) said underlying layer contains a liquid that forms said liquid layer, said liquid serving as a source of feeding said liquid layer; or (c) between said underlying layer and said liquid diffusion prevention layer, there is, further, provided a liquid diffusion adjusting layer containing a liquid for forming said liquid layer. wherein θ is a water contact angle on said inner surface of said multilayered structure, θ A is a water contact angle on the liquid that is forming said liquid layer, and θ B is a water contact angle on a simple plastic material that is forming said underlying layer; (a) a gap is not more than 200 μ m between the surface of the underlying layer that is in contact with said liquid layer and said liquid diffusion prevention layer; or (b) said underlying layer contains a liquid that forms said liquid layer, said liquid serving as a source of feeding said liquid layer; or (c) between said underlying layer and said liquid diffusion prevention layer, there is, further, provided a liquid diffusion adjusting layer containing a liquid for forming said liquid layer.