Illustration is a symbol of popular culture gradually derived from information dissemination in modern society. It can represent today's cultural fashion and popular art. With the development of information in human society, the art of illustration is constantly expanding and developing. It is foreseeable that it will still play a very active role in information dissemination in the future.

Nowadays, almost all visual means can be displayed in front of people in the form of illustrations, and even this way has become a new communication tool. For some people who don't know much about the industry or are not particularly clear about some contents, illustrations can be used to simply and conveniently understand the ins and outs of things, so illustrations have become an image design with the general public as the main object and visual communication as the main form of communication. Nowadays, the expressive methods of illustration are very complicated and diverse, which are not only in the animation industry, but also in technology, medical care and even fashion art, which seem to be unrelated.

Actually, illustration is not only popular in recent years. If we want to trace back to its predecessor, we can trace it back to ancient caves. The earliest illustration appeared in altamira Cave. These illustrations were painted in caves as murals, and in the Middle Ages in Europe, the art of illustration had been used in religious reading. Later, with more and more ways for people to accept this artistic way, illustration has gradually been used in natural science, grammar books and even some writers' collections as a way. With the development of art and artistic thoughts, illustration art has been recognized by many people.

The art of illustration in the 21st century is not only like before, but also needs to sit and paint with paints and brushes. Nowadays, the painting methods we use have surpassed static images. With the gradual popularization and rapid development of computer technology, the illustrations used for commercial purposes no longer use paper and pigments as tools and materials, but more use digital software. The art of illustration has begun to get rid of the attachment of words, appearing in front of people, and has gradually become a new art form. Even a painting without any words can bring people a lot of new cognition and convey the author's different ideas.