A gas-barrier laminate film (5) which includes a film base material (1), a layer (2) that contains an inorganic compound (A) and is formed on one surface of the film base material, and two layers formed on the layer that contains the inorganic compound (A) so as to be adjacent to each other, wherein the two layers are made up of a layer (3) that contains a carboxylic acid polymer (B) and a layer (4) that contains at least one selected from a group consisting of a silicon compound (C) represented by the following general formula (I) and a hydrolysate thereof, and a vinyl alcohol polymer (D): Si(OR1)4  (I) (where R1 represents an alkyl group with 1-4 carbon atoms, and the four R1s may be identical or different).