Poster is one of the most important forms of visual communication, and it is also a universal international language with strong comprehensive characteristics. With the continuous development of the economy and the prosperity and growth of the commercial advertising industry, the general public is paying more and more attention to the transmission of cultural visual information and the inheritance and development of China's traditional culture. The art of paper-cutting is one of the manifestations of Chinese national cultural characteristics, and belongs to a typical Chinese traditional culture. In modern poster design, more and more designers are beginning to try to apply the art of paper-cutting to poster design. Although there are essential differences between the two, there are aspects that can be used for reference. This article will analyze the application research of paper-cutting art in modern poster design from the aspects of form, color and creativity, and explore the importance of paper-cutting art for modern poster design creation.