Abstract: There are four changes about Yang Wanli in shaping his poetic style.Texts and data statistics show that the establishment of Chengzhai Style and the development of the poet’s creative work are out of phase.The substance of the creation changes in the period of The Chaotian Xuji is to turn seven-syllable style into a flexible and mellow one.Striving for "change" runs through Yang Wanli’s whole process of creation.In term of Chengzhai Style,from the initial stage of individual poetic style to the establishment is the process of seeking for new language and aesthetic paradigm,gradually breaking through the former writing method and naturally deconstructing the rules existing in classical poetry.But Chengzhai Style,the core esthetical category based on "interest",is born with limitation.