PURPOSE: To provide a manufacturing method for insert-molded article, in which molten resin can be injected and filled in a cavity without developing slag and wrinkle of an insert film on the surface of the insert-molded article and an insert mold.

CONSTITUTION: The insert mold has a movable mold 2, to which an insert film 1 is fixed, and a fixed mold 4 with an injection port of molten resin and, at the same time, with fixing pins 5 for pushing the insert film 1 against the movable mold 2 so as to form a cavity, in which molten resin is injected and filled, by closing the movable mold 2 and the fixed mold 4. In the above- mentioned insert mold, the fixing pins 5, which project from the fixed mold 4 in the cavity, are pushed in the fixed mold 4 by means of the pressure of the molten resin injected in the cavity for performing injection molding.