Abstract: The article points out that the reason why Zhao Shuli's using day-to-day life narrative and folk discourse is not based on his folk stand, but based on his transforming the struggle method of the mainstream discourse into the day-to-day life narrative in his novel Sanliwan. At the same time he constructed the text with the isomorphic factors which enlightenment discourse, folk discourse and mainstream discourse shared and by infiltration of the mainstream discourse into the other discourses, realized the creation purpose of appealing to common people and playing political role.