Abstract: Since Ban Gu and Yang Xiong, there has been a tradition of researching Fu by classification. On the basis of predecessors, Xiao Tong put forward a new category standard according to the development of the times, and realized the classification of humanities through the classification of Fu. The study of humanism is both literature and humanity in that literature is about literary beauty, and humanism is about the study of governing people, that is, the rules and regulations of building and governing the country. The fifteen types of Fu in Wen Xuan include both traditional lyric literature and political governance, and the classification of Fu is Xiao Tong's tool to express his views. Literature and politics are not contradictory concepts, and the system recombined by Xiao Tong has both literary and political ecology. The literature ecology displays for advocating the great Fu of Han dynasty. The political ecology shows that it pays attention to the national theme of state affairs and pays homage to the scripture.