Crystal label is a digital printing process in which white ink, gloss oil, etc. are stacked layer by layer on the release paper to print various patterns and then covered with transfer film, and then transfer film to transfer the pattern to the surface of the item. Crystal label transfer compatibility is very high, smooth plane and arc can be firmly pasted, rich application cases. At present, crystal labels have been widely used in various industries, such as gift packaging, wine labels, tea labels, home and so on. In the gift packaging industry, crystal labels are used to beautify the appearance and provide higher viewing and personalized customization needs; In the wine industry, crystal labels are used to publicize the characteristics, advantages and other information of products; In the home industry, crystal labels are used to beautify the home environment and improve the quality of life. It can be seen that the application of crystal targets has gone into various fields and has become an important bridge of communication between enterprises and consumers.