Yaoyongziyuan is an important book of popular characters written by Ge Hong in the Eastern Jin Dynasty,which has important academic value in the history of Chinese dictionary development.Although it is not passed down today,through the compilation of lost texts by predecessors,we can still learn their general style and features,analyze their characteristics,reveal their value in the history of linguistics and lexicography,and supplement the gaps in the study of this book,which is of great benefit to the study of ancient lost books.