A shaping method for performing shaping by sequentially stacking a shaping material on a stage on the basis of slice data, the shaping method includes: a step of obtaining slice data by slicing data on a three-dimensional model of a shaping target into a plurality of layers in a predetermined direction; and a step of sequentially stacking the shaping material on the basis of the obtained slice data for the plurality of layers, wherein in a case where a change instruction to change the data on the three-dimensional model of the shaping target is received during shaping, a processing process corresponding to the change instruction is performed on remaining slice data to be used for the shaping after the change instruction among the slice data for the plurality of layers, and the shaping is continued using the remaining slice data after the processing process.