The Song of Sword in Spring Square is the work of Li He, a poet in the Tang Dynasty. This is a famous poem chanting swords by Li He and even the whole history of China's poetry. The poem delicately depicts the brilliance, texture, decoration and extraordinary functions of the sword collected by Chunfang Zhengzi official, and implicitly places great hopes on its owner. The whole poem is novel in conception, conception, metaphor and theme.