The theory of Fu-composition proposed by Yan xiong had made a great influence in the later period. No matter people who agree or disagree on it, all of them have to study it up. In Ching dynasty, the function and worth of Fu had been respected than the previous periods. The article of “Fu theory of Yan xiong and replies of scholars in Ching dynasty” written by Zhan hanglun had introduced the viewpoints of scholars in Ching dynasty. However, the appropriateness of the viewpoints still need to be discussed.