3D stereoscopic overlay technology is a novel stereoscopic printing technology, which forms a series of stripes, icons, trademarks and other patterns into a special stereoscopic effect. The depth of field can be controlled at will, and it can also be super depth of field. Friends who have done stereoscopic printing know that due to the structural characteristics of stereoscopic cylindrical grating, no matter how advanced the traditional stereoscopic printing technology is and how sophisticated the printing equipment is, it is impossible to overcome the phenomenon of stereoscopic picture jumping. When the stereoscopic printing technology is controlled in place, there will be 2-6 jumping points. If the stereoscopic printing technology does not pass, the jitter will shake with the left and right of the picture. This is also the fundamental reason why many people feel dizzy when they look at stereoscopic paintings. No matter how beautiful the printed pictures are, if the stereoscopic printing technology makes consumers feel uncomfortable, the product image will be deducted. Nowadays, the 3D stereoscopic superposition technology is adopted, which not only eliminates the dizziness problem, improves the product grade, attracts consumers, but also plays a certain anti-counterfeiting role.