There are so many versions of 《Lanting Xu》in Song Dynasty. Since Huang- Tingjian highly praised 《Dinɡ- Wu Lanting Xu》, it had been the main version which the followers reprinted. Further, it resulted in the focus of reprints, collection and research of 《Lantingji Xu》in Calligraphic theory documents in Song Dynasty. In the research, we will discuss the phenomenon, and look closely at the interpretation and learning of Wang- Xizhi from the contention of 《Dinɡ- Wu Lanting Xu》in different documents of calligraphic theory to know the role of 《Lantingji Xu》in calligraphy "revival" and "innovation".