A method for manufacturing a press-formed product is provided that can suppress occurrence of a forming defect such as a crack in a starting material during press forming, and can also suppress occurrence of problems when transferring a starting material during press forming. In the method for manufacturing a press-formed product, a manufacturing intermediate is formed by forming, in a flat-sheet shaped blank sheet, a planned outline portion including an undulating shape which is used for forming an outline of an outer circumferential portion of a press-formed product. Further, the flat shape of the blank sheet is maintained in a region from the planned outline portion toward the center of the manufacturing intermediate, or an intermediate stretch-formed portion having a predetermined intermediate forming height is formed in the manufacturing intermediate in the region. Furthermore, a through-hole is formed by piercing a flat portion at which the flat shape is maintained or a stretch-formed-side top portion of the intermediate stretch-formed portion. In addition, the flat portion after the through-hole is formed therein is formed into a stretch-formed portion of a predetermined height, or the intermediate stretch-formed portion after the through-hole is formed therein is formed into a stretch-formed portion of a predetermined height that is greater than the intermediate forming height.