A manufacturing method for a shaped object for shaping the shaped object by layering a layer of a shaped object material, which is a material of the shaped object, in a layering direction set in advance, the manufacturing method including slice data generating stage of generating a plurality of pieces of slice data, each of which indicating a cross-section of the shaped object at positions different from each other in the layering direction; and shaping stage of shaping the shaped object by ejecting the shaped object material based on a plurality of pieces of slice data; where in at least either one of the slice data generating stage or the shaping stage, a process of applying fluctuation, in which a position seen from an outer side of the shaped object changes in an irregular form, to the shaped object is carried out.