Stonebull poetry is a group of similar poems evolved from the same poem. It borrows folklore as a carrier，spread widely in more than a thousand years since the Tang and Song Dynasties，and spreads in the wind and takes root. It produces a new version in every place that has a tractor，a rock or a stone horse，and the legendary protagonist and the author of his poem also constantly changing in accordance with local conditions. Has derived from Li Bai，Su Shi，Yang Shen and Emperor Qianlong more than thirty authors，as well as the text more or less the same version. Seeing from the traditional order of the two，the dominant sequence of the existing legends and the tacit timing of the actual literature. From the poetic text，there are local variations in the text，there are also genres，rhyme and sentence changes and other institutional changes. The variation of “Shi Niu poem” can be regarded as a typical case of lower literati participating in the spread of folk literature.