Wu Wen-ying is not only an undoubtedly important figure in the history of ci poetry, but also a controversial ci poet. Since the late song dynasty, reviewers have been having different opinions about Wu Wen-ying's ci poetry, praising or criticizing. It is a special phenomenon in the history of ci criticism. This issue is worthy of further exploring both in the work itself, reader response, etc. Therefore, in this dissertation the author uses Wolfgang Iser¡¦s ¡§artistic¡¨ and ¡§aesthetic¡¨ concepts to discuss text and the reader response, researching in the art form of Wu Wen-ying's ci poetry and the reviewers¡¦ criticism. Since the latter involves the reader responses in different times, this dissertation further elaborates through Hans Robert Jauss¡¦ concepts of ¡§horizon of expectation¡¨ and ¡§reception history.¡¨ As for the art form, this dissertation discusses two parts in Wu Wen-ying's ci poetry, ¡§the organization of writing¡¨ and the ¡§diction,¡¨ in order to explore the nature of its art form. The structure and composition of ¡§the organization of writing¡¨ and the ¡§diction¡¨ are relevant to the overall organization and each word in the text; Therefore, in ¡§the organization of writing¡¨, it will research in the ¡§design of time and space¡¨ and the ¡§arrangement of fiction and reality.¡¨ As for the ¡§diction¡¨ is concerned, the creative approach is analyzed by the ¡§image,¡¨ ¡§allusion,¡¨ ¡§substitute word,¡¨ and so on, and their possible impacts on reading. Moreover, regarding the history of ci criticism, this dissertation shows the criticism of Wu Wen-ying's ci poetry by ci poetry schools and ci poet groups in different times, through ¡§synchronic¡¨ and ¡§diachronic¡¨ approach and Hans Robert Jauss¡¦ concept of ¡§reception history.¡¨ After discussing ci poets¡¦ criticism, the other chapter of this dissertation will further examine on why Wu Wen-ying's ci poetry is so controversial. Each ci poetry school has different aesthetic orientation and horizon of expectation which affect its criticism. Thus, in this chapter there is further discussion about the reasons through ¡§review standards¡¨ and ¡§reading mode.¡¨ Finally, the conclusion summarizes the preceding three parts, the art form, reviewers¡¦ criticism on Wu Wen-ying's ci poetry, and the reason why Wu Wen-ying's ci poetry is controversial.