Disclosed is a nail print apparatus including a storage unit in which a plurality of sets of data relating to a plurality of design parts constituting each of a plurality of design images are stored, a photographing unit which obtains a finger image by photographing a finger, a nail region information detection unit which extracts a nail region from the finger image and detects an area, a length in horizontal direction and a length in vertical direction of the nail region, a design selection unit which selects one design image from the design images which are stored in the storage unit, a part layout calculation unit which reads out the one design image and calculates a print size and a print position of each of the design parts, and a print unit which performs a printing to the nail region according to printing data.