Since the 18^th National Congress of the CPC Central Committee，the language work has been incorporated as part of the national strategy. Particularly，in the current context of cultural globalization，guaranteeing the security of Chinese language and managing the relationship between Chinese and other languages are of great significance to promoting Chinese national image and maintaining Chinese national identity. Currently，Chinese language promotion is faced with challenges. Additionally，the diverse and complex language environment in China，along with the introduction of postmodern linguistic elements，brings obstacles to integrating and constructing contemporary Chinese discourse and identity system. To cope with the above challenges，substantial strategies should be taken，such as maintaining and promoting the Chinese language in international communication，contributing to coexistence of multiple languages and seeking modes of expressions popular among people in and beyond China. Last but not least，linguistic study should be regarded as another significant dimension to study national security.