Abstract: The modernization of Chinese vocabulary is an important object of language plan. It is mainly conducted at the level of putonghua(standard Chinese pronunciation)in three principal forms of borrowing, building of new words and using of old words in new senses. The scientificalness of terms and popularness are the two opposites of a contradiction. It is best that the two are perfectly unified; when they are confronted with difficulty in their combination, adaptation can be made of coexistence and different application. It is imperative to deal well with the relation between modernization of language and westernization of culture. The compilation of dictionaries should reflect of content of vocabulary modernization.

Key words: modernizationofvocabulary, languageplan