Provided is a method for shaping a three-dimensional shaped object using a cutting tool configured to perform cutting at a first length at maximum in a predetermined cutting direction, the method including: a first section shaping step of shaping a first section having a length in a first direction shorter than the first length by laminating a shaping material; a first section cutting step of cutting the first section with the cutting tool having a cutting direction along the first direction; a second section shaping step of shaping a second section having a length in a second direction shorter than the first length by laminating the shaping material, to connect to a first end surface of the first section in the first direction; and a second section cutting step of cutting the second section along the second direction with the cutting tool having a cutting direction along the second direction.