This paper analyzes more than 150 buzzwords from 2010 to 2020. The examples of Chinese catchphrases involved in this study are derived from Chewing Words. These buzzwords and examples are mainly selected from People’s Daily and China Daily. Based on the conceptual metaphor theory and the conceptual hybrid theory, this paper attempts to conduct cognitive research on Chinese metaphorical buzzwords, including their classification, cognitive semantics and functions. On the research method, this paper adopts the combination of diachronic and synchronous research, description and interpretation, and qualitative research. This paper discusses and analyzes the cognitive mechanism, the reason of popularity and the function of metaphorical buzzwords in the process of metaphorical meaning construction. On the one hand, the analysis of these buzzwords provides realistic material for the study of metaphorical buzzwords, and also provides a new perspective for further research. On the other hand, it is expected to enhance people's understanding of some social phenomena and problems behind metaphorical buzzwords, and help to play its active role in spreading light. In the long run, the study of metaphorical catchphrases provides a useful reference for the historical evolution and future development of Chinese catchphrases.