The Book of Songs was produced from the early years of the Western Zhou Dynasty to the mid-Spring and Autumn Period. It is the earliest collection of poems in China and the most important literary work in the pre-Qin period. Ancient Yi poems other than The Book of Songs are scattered in later writings, and it is difficult to distinguish between true and false. Therefore, The Book of Songs is also the only collection of poems from the Western Zhou Dynasty to the Spring and Autumn Period. The ballads before the Western Zhou Dynasty were very short, but only the rudiment of poetry. In the Zhou Dynasty, poetry flourished on the original basis, and many of these poems were included in the Book of Songs. The Book of Songs is a collective creation, including temple songs, national epics and political satires, as well as a large number of folk songs. The contents and forms of folk songs in The Book of Songs are rich and colorful, which initiated the source of China's poetic realism and had a far-reaching influence on China literature and history.