An excellent paper poster should attract the audience's attention. The content of posters that can't attract the audience's attention must be boring, boring and worthy of criticism, or the reference object is unknown and the theme of the content is not clear enough, which makes the appeal of paper posters greatly reduced. This is the difference between the poster and the paper itself. Poster is a medium, and its first purpose is to attract the audience and explain the research results. Therefore, when choosing the poster content, we must pay attention to optimizing its essence and honing it to simplicity.