A slice data generation device generates slice data representing a cross-section obtained as a result of cutting a three-dimensional model and includes a reading section that reads information on a polygon mesh, a change section that changes phase information on the read polygon mesh such that a contour polyline that represents a contour obtained as a result of slicing the polygon mesh read by the reading section into round slices is capable of being acquired, a correction section that acquires the contour polyline from the polygon mesh, the phase information on which has been changed by the change section, and corrects the acquired contour polyline such that an area inside the acquired contour polyline is capable of being painted out; and a paint-out data generation section that paints out the area inside the contour polyline corrected by the correction section.