As a new style in Song Dynasty, it is actually a "grafting" of various styles. Generally speaking, the prose language is the main language, and the style draws lessons from the structure and rhyme format of the subject-object question and answer in Han Dafu, as well as the parallel couple sentence pattern in Fu Xiao, a lyric of the Six Dynasties. Compared with Fu, it is more dispersed; Compared with prose, it has changed the usual characteristics of discussion, reasoning and narration, and used the "artistic conception" of poetry to convey feelings. Among them, the combination of whole and prose language, subject-object structure and emotional artistic conception are the three most important stylistic features of prose. These three stylistic features were stereotyped in Ode to Autumn Sound by Ouyang Xiu, and Su Shi's poems before and after Red Cliff Fu followed suit, and then changed, achieving the perfect combination of "doing whatever you want" and "not exceeding the moment". This is particularly evident in the pre-fu. Therefore, people who have been talking about Su Shi's prose pay more attention to the former and ignore the latter, or the former covers up the latter.