This method for producing a machine part has: a first step in which, by performing bending processing on an end portion of a material, a processed portion, which has a structure in which a plurality of layers having a thickness corresponding to the plate thickness of the material overlap, is formed in the material such that the plate thickness direction of said layers is orthogonal to the plate thickness direction of the material; and a second step in which, by performing forging processing on the processed portion, the layers of the processed portion are pressed by means of plastic deformation while the shape of the processed portion is changed to a target shape.