The earlier scholars who have pointed out that Liushu（六书）are six major methods of word-formation in Chinese areBangu（班固）、Zhengzhong（郑众）and Xushen（许慎）in Donghandynasty. To bring these ideas about Liushu to light is essential to the research of the history of philology. ZhengXuan（郑玄）followed Zhengzhong’sopinion on the Chinese Characters, so he selected the term not Xushen’sOpinion but Zhengzhong’sOpinion about Liushu to summarize the methods of Chinese word-formation. It is important to sum up Zhengxuan’sand Zhengzhong’sidea about theChinese Characters and their contribution to the history of philology through checking all Zhengxuan’sannotations about the Chinese word-formation. Zhenzhongand Zhengxuan’sopinion on Liushu has had an immense Influence upon philology of later ages.