[Problem] To provide a laminated film which can form a laminated configuration consisting mainly of a polypropylene film and constituted from an almost single kind of resin with reduced environmental burden and which, when laminating an inorganic thin film layer, has gas-barrier properties, which are required of packaging materials. [Solution] This laminated film for forming an inorganic thin film layer has a coating layer laminated on at least one surface of a base material layer, the main component of which is a polypropylene resin, the laminated film being characterized by satisfying requirements (I) to (III) below. (I) The heating elongation rate of the laminated film at 130°C is 10% or lower for both the MD direction and the TD direction. (II) The sum of a maximum peak height (Rp) and a maximum valley depth (Rv) obtained by measuring the coating layer-side surface by using a scanning probe microscope is 30.0 nm or lower. (III) The attachment amount of the coating layer is 0.10 g/m2 to 0.50 g/m2.