With respect to the concept that "popularization" is the most important keyword in early modern culture, I herein discuss the influence of the development of printing in the Song Dynasty on classic poetry, which used to be the center of Chinese literature. For about three centuries from the Northern to the Southern Song Dynasty, printing developed rapidly and contributed greatly to create a society where printed books were read by people from upper and middle classes of society. However, despite rapid increases in the number of printings, the penetration of printed books into the society was gradual; printed books were only appreciated by intellectual people in the Northern Song Dynasty, whereas they were widely accepted by non-intellectual citizens in the Southern Song Dynasty. I would like to discuss how printed books altered the consciousness of intellectual people from the middle to the end of the Northern Song Era, which corresponded to the late 11 and early 12 centuries. I also discuss the effect of printed books on people in the early to the middle Southern Song Era, using Wang zhuangyuan fenlei jizhu Dongpo xiansheng shi by Su Shi as a subject of analysis. I also analyze the content of increasing numbers of printed books in the late Southern Song to the Yuan Dynasty, such as those related to poetry, selections, textbooks, and collections of poems and stories, and discuss the significance of these printed articles. Finally, I discuss contribution by the publisher Chen Qi in the Hangzhou district, who strongly supported the poem-making activities of poets in the Jianghu Groupe, the most popular group of poets in the late Southern Song Dynasty. I would like to discuss a process of how ordinary publishers organized poets in the society; this is a process of how non-famous poets come to receive highest reputation in the society, which could not be achieved without the development of printing at that time. This is the very way by which the traditional poems became popular in the society in the modern trend of popularization.