A process for producing a metal film-coated material, the process including: (a1) forming, on a substrate, a polymer layer formed from a polymer which has a functional group capable of interacting with a plating catalyst or a precursor thereof, and is directly chemically bonded to the substrate; (a2) providing a plating catalyst or a precursor thereof to the polymer layer; and (a3) performing plating with respect to the plating catalyst or a precursor thereof. The polymer layer satisfies all of the following requirements (1) to (4): (1) the saturated water absorption coefficient of the polymer layer as measured in an environment of temperature of 25° C. and relative humidity of 50% is 0.01 to 10% by mass; (2) the saturated water absorption coefficient of the polymer layer as measured in an environment of temperature of 25° C. and relative humidity of 95% is 0.05 to 20% by mass; (3) the water absorption coefficient of the polymer layer as measured after 1 hour of immersion in boiling water at 100° C. is 0.1 to 30% by mass; and (4) the surface contact angle of the polymer layer as measured after dropping 5 μL of distilled water thereonto and leaving to stand for 15 seconds in an environment of temperature of 25° C. and relative humidity of 50% is 50 to 150 degrees.