3D stereoscopic painting is also called "three-dimensional painting, stereoscopic painting and panoramic painting". There are many different kinds, which can be divided into PP, PET and so on. To understand the 3 stereoscopic painting principle, we first need to have a correct understanding of the concept of 3D stereoscopic image. 3D stereoscopic image is to use people's visual differences and optical refraction principle in a plane, so that people can see a three-dimensional picture directly, things can not only convex out of the picture, but also can be hidden in it, vivid, lifelike, to the people with a strong visual impact. The principle of 3D stereoscopic picture imaging is similar to the 3D stereoscopic image, all of which are displayed by the principle of optics. 3D stereoscopic painting is a real visual three-dimensional painting. The emergence of 3D stereoscopic painting technology is another technological revolution in the field of image color replacing black and white, and it is also the future trend of the image industry development.