¡@¡@Compiled by the Division translation " Lao Qi Da " and " Piao Tong Shi " series of books, are the most authoritative, and important Chinese spoken language conversation textbook in Korean, but also the use of literacy learning Chinese textbooks. These two series use a long time, spread wide, in history has a huge impact, reflecting the three or four hundred years of modern Chinese phonology, vocabulary and grammar of a number of changes in the study of modern Chinese language has a unique value. As the Chinese affixes involve the two levels of vocabulary, and grammar, is the important phenomenon in the history of Chinese vocabulary. It is tremendous and research value. Since the pre-Qin, ¡§derived word¡¨ has been generated more and more with the times. The increasing number of terms is generated by the derived word formation, and derived word is one important way for polyphony of Chinese language. Therefore, this paper intends to represent the Yuan and Ming northern Chinese spoken " Lao Qi Da Yan Jie " and " Piao Tong Shi Yan Jie " two books for the corpus, the word derived from two books discuss the types of use cases, and change. ¡@There are five chapters in this thesis, except <Introduction> and <Conclusion>, the derived words are discussed for the current situation. It also discusses the prefix and suffix for the two books of " Lao Qi Da Yan Jie " and " Piao Tong Shi Yan Jie". Simply, except for a few examples of non-Chinese idiom, the " Lao Qi Da Yan Jie " and " Piao Tong Shi Yan Jie " which are not the local material, but useful textbook, are in line with the common Chinese language phenomenon. Keywords :Lao Qi Da Yan Jie, Piao Tong Shi Yan Jie, Chinese textbook, derived word, affix