There is provided a protecting method capable of simply and firmly protecting a required face of an article such that the required face of the article is not damaged or contaminated and capable of extremely simply carrying out a protecting step and a protection releasing step.As means for protecting a surface of an article, there is used a macromolecular compound in a liquid state a freezing point of which exceeds that of water, a gel-like object constituted by mixing the macromolecular compound with a fine powder, or a sheet-like object impregnated or coated with the macromolecular compound in the liquid state the freezing point of which exceeds that of water or the gel-like object, a face constituting an object of protection of the article is covered thereby or a hole or a gap thereof is filled therewith, a protecting film or a protecting layer is formed by freezing the macromolecular compound by cooling, and when protection is not needed, the macromolecular compound is defrosted by elevating a temperature thereof.