Horace wrote it in the form of poetry.

Horace's literary theory works written in the form of poetry are poetic art.

"Poetic Art" holds that works should conform to natural creation and be close to reality; Second, it must conform to the psychology of the audience and meet expectations; Third, it should conform to the laws of art and be used moderately. Based on this, a general principle is put forward: appropriateness is rationality.

The art of poetry embodies a realistic spirit of seeking novelty in inheriting tradition. It inherited Aristotle, started the end of the Renaissance and later classicism, and had a far-reaching influence on the literary creation from16th century to18th century, especially the creation of drama and poetry.

Horace's philosophical thought;

Horace believes that the task of poetry is to inherit the will of God and guide life. Fiction is allowed when imitating nature, but it should be reasonable and close to the truth. "The purpose of fiction is to make people happy" and "entertaining is not only to convince the reader, but also to make him like it to meet expectations".

Poets "should play with Greek examples day and night", should look for real examples in life and customs, learn the language faithful to life, discover the types and characteristics of people, and create some words with the characteristics of the times. These words can follow the traditional theme and describe people who tend to stereotype (such as Achilli Uss).