To surely and strongly fix and hold an insert part item when the insert part item is buried in the vicinity of the outer surface of the resin part of a resin molding.

A resin molding A is provided with a resin part 1 molded by using a metallic mold and an insert part 2 all or partially buried in the resin part 1, and constructed in such a manner that a second outer surface 14b connected to a first outer surface 14a where the insert part 2 is buried so as to intersect the same approaches one side of the buried part in the resin part 1 of the insert part. In a part of the peripheral edge of the buried part of the insert part 2, a notched recessed part 5 is formed by preventing the incursion of the resin between an inner surface for forming the metallic mold section outer surface 14b and the outer surface of the insert part 2 opposite this inner surface.