On the basis of Mrs. Wei, Su Shi put forward the concept of a calligraphy system that uses human metaphors of spirit, energy, bone, flesh and blood. In his opinion, only those that meet the five standards are considered good. calligraphy. In fact, looking at Su Shi's calligraphy theory, he always wanted to pursue the Xiao, San and Yuan style of the Wei and Jin Dynasties. However, due to lack of self-awareness, he could only choose the second best, "dignified, elegant, strong and graceful". Huang Zisi was his junior, and he was originally asked to review the poetry collection, but Su Shi discussed calligraphy at the beginning, indicating his emphasis and pursuit of calligraphy. This article is not only Su Shi's most important literary theory, but also his most important calligraphy theory.