In the printing process, a key indicator that people often pay attention to is overprinting, because the waste caused by inaccurate overprinting often accounts for a large proportion of all waste. Although flexographic printing machine manufacturers have provided a good foundation for precise overprinting in the design and processing process, and automatic monitoring systems also provide guarantees for precise overprinting, the technical level and proficiency of operators also have a significant impact on overprinting accuracy. If some adjustments can be made for the convenience of overprinting when designing ink drawings, it can greatly reduce the difficulty of printing work and lower the scrap rate. The simplest way is to use reversed text as much as possible when designing the original ink draft, or to create a reversed outline between two colors, or to cover the edges of the two colors with a third slightly thicker dark outline. For finer prints, Tappng technology can be used, and the amount of indentation depends on the accuracy of the printing machine, the quality of the paper used, and the level of the operator.