Du Fu had a clear understanding and an open-minded attitude towards the literary heritage of previous generations. He knew both the strengths and weaknesses of the poetry of previous generations, so he used "different styles and pseudo styles to express elegance and make more mistakes." It is summarized and integrated by the attitude of "The teacher is your teacher" ("The Six Quatrains of Drama"). In Du's poems, from government affairs to people's livelihood, from mountains and clouds to vegetation, trees, insects and fish, the entire external world is integrated with the poet's inner world, and is incorporated into the system of Confucian political ideals, ethical principles and aesthetic norms. . In Du's poems, strict rhythm and majestic momentum go hand in hand, the refinement of words and the perfect harmony of artistic conception are both beautiful, idioms and Japanese common characters are used in a wonderful way, and the splash-ink color and meticulous description are both perfect. In a word, Du Fu's reference to the artistic experience of poetry of previous generations is comprehensive and innovative. If you pay attention to the relationship between Du's poems and the poems of previous generations when reading them, you will have a deeper understanding of his good intentions.