Abstract: [Object] With the present invention, it is possible to, for example, more appropriately flatten a layer of ink during formation of a three-dimensional object. [Means of Realizing the Object] A forming apparatus for forming a three-dimensional object by additive manufacturing include an inkjet head, flattening means, a platform, a main scanning driver, and a deposition direction driver to change a head-to-platform distance being a distance between the inkjet head and the platform. In an operation of forming a layer of ink, the forming apparatus causes a plurality of times of the first direction scanning intended to cause the inkjet head to move in one direction with respect to an identical position of the three-dimensional object in the middle of formation, and increases the head-to-platform distance during a main scanning operation to be performed later than the head-to-platform distance during the main scanning operation to be performed earlier in an operation of forming a layer of ink.