The present invention provides a composite film having a linearly-scratched, thin metal film and a plastic film, which has good absorbability to electromagnetic waves in various frequencies, as well as reduced anisotropy in electromagnetic wave absorbability, suitable for electromagnetic wave absorbers, and its production apparatus. The composite film having a linearly-scratched, thin metal film and a plastic film according to the present invention comprises a plastic film, and a single-or multi-layer, thin metal film formed on at least one surface of the plastic film, the thin metal film being provided with large numbers of substantially parallel, intermittent, linear scratches with irregular widths and intervals in plural directions. Its production apparatus comprises pluralities of pattern rolls each having large numbers of fine, high-hardness particles on the surface, which are arranged to form linear scratches on the thin metal film side of a thin metal film-plastic composite film, and means each pressing the pattern roll to the composite film, and pluralities of the pattern rolls being oriented in different directions in a plane in which they are in sliding contact with the thin metal film of the composite film.