To provide a gas absorption film which has a metallic chemical absorbent and suppresses embrittlement under high temperature environment.SOLUTION: A gas absorption film 10a has a gas absorption layer 12 and a first heat-resistant layer 14 on a base material, in which the gas absorption layer 12 contains an olefin-based thermoplastic resin other than a polypropylene-based resin and a metallic chemical absorbent dispersed in the thermoplastic resin, and the first heat-resistant layer 14 is composed of the polypropylene-based resin.SELECTED DRAWING: Figure 1

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