Because all the works in the Book of Songs, except a few, are based on real life, "Hungry people sing about their food and laborers sing about their struggles", and their lyric writing is based on daily life and daily experience, showing distinct realistic characteristics and expressing the most humanistic and straightforward feelings.

In addition, the realism advocated by the poem also had a far-reaching impact on later literary creation. Yuefu folk songs in Han Dynasty originated from events. Du Fu's "Don't cut the virtual body, be close to elegance", Bai Juyi's "Write in fashion" and write poems in an event (Nine Books with the Same Yuan). They all wrote many poems reflecting reality. After the Song Dynasty, elegance became the characteristic of poetry creation.

To sum up, The Book of Songs is the soul of realism and one of the sources of China's poetry development.