(1) Poetry should be rooted in and truly reflect the real life of society, which is the core of his poetry theory. He put forward that "articles should be written in time, and songs and poems should be written for things" (nine books in the same yuan), and advocated "writing for the monarch, ministers, people, things and things, not for articles" (Preface to New Yuefu), paying attention to the sufferings of people's livelihood: "Singing only makes people sick" (mailing).
(2) Emphasize the social function of poetry. He proposed that poetry should have the functions of "judging the situation" and "releasing human feelings" (Nine Books of the Imperial Garden). This view is also his standard to measure ancient writers and the program to lead the new Yuefu movement.
(3) Emphasize the unity of form and content of poetry, and advocate the realism and popularization of poetry. It requires the unity of form and content, and form serves the content, and opposes the pure pursuit of form. Poetry creation "does not seek high palace rules, does not care about strange words" ("Send"), "focuses on quality and suppresses obscenity, and sincerely eliminates falsehood" ("Celine"), opposes obscenity, extravagance and falsehood, and advocates verifying the truth, simplicity and popularity of poetry style. Language should be easy to understand and syllables should be harmonious and euphemistic.
(4) Elaborate the characteristics of poetry and emphasize its educational and social functions. He put forward: "Poets: root feelings, Miao words, Hua Sheng and true meaning" (nine books at the end of Yuan Dynasty), and "true meaning" means "six meanings after learning", which requires poetry to play a "beautiful thorn" role.