Michel Foucault advanced Functional Author to confirmed the power of discourse,which can be seen everywhere in the paper What Is Author. Meanwhile,we can find some marks about the ineffectiveness of discourse. First,Foucault never mentioned the social ideology about Genius. Secondly,the reader-role in the society after the loss of the author's authority was missed. In the end,Foucault also didn't expound the social reason of the Death of Author. The three problems are the premises and the outcomes of Functi...