Flexible circuit board laminated structure and mobile terminal

The invention relates to a flexible circuit board laminated structure and a mobile terminal. The flexible circuit board laminated structure includes a substrate layer, a copper foil layer, a covering film and a shielding film; the copper foil layer is arranged on the substrate; the covering film is stacked on the copper foil layer; at least one through window is formed in the covering film; the at least one through window is communicated with the copper foil layer; the shielding film is stacked arranged on the covering film; and the shielding film is connected with the copper foil layer through the at least one through window. According to the flexible circuit board laminated structure provided by the invention, the shielding film is attached to the upper part of the covering film, and by means of the through windows in the covering film, the shielding film can be connected with the copper foil layer, so that the shielding film can be grounded, and therefore, a reference loop can be provided for wiring having impedance control requirements, and the impedance signals of a signal line can be more continuous; since the shielding film is attached directly to the upper part of the covering film, an attaching process is simple, and operation can be facilitated, and therefore, processing cost can be reduced; and a mode in which the upper part of a covering film is coated with silver slurry in the prior art can be replaced, and the problem of poor continuity of impedance signals cased by unevenness of the coating of the silver slurry can be solved.