The vocabulary of modern Chinese is always in a dynamic change, and they create new words directly with the continuous emergence of a large number of new things. The COVID-19 epidemic in 2019 has had a huge impact on social development. Due to the gradual changes in the appearance of words due to the new epidemic, among the part of the vocabulary that has developed and enriched, the most striking is the new term. This research takes the new epidemic as the background, investigates the Chinese terms related to the new epidemic, and analyzes the evolution of Chinese terms caused by the epidemic. This research is based on materials such as the "Chinese-English New Coronary Dictionary", "World Intellectual Property Organization Database (Wipo)" and "Chinese-English Vocabulary for Fighting the New Coronary Pneumonia Epidemic" published by Fudan University Press. This paper first defines the concept of the term, and also summarizes the unique characteristics of the term. Secondly, the evolution of Chinese terminology is analyzed from two aspects of situational composition and semantics. Firstly, the formal composition of Chinese terminology is divided into compound words, contraction words, borrowed words and homophonic words. Then, the semantic aspects of Chinese terms are divided into new words with new meanings, old words with new meanings, old words regenerated and rhetorical semantics. This paper adopts the research method combining application research and analysis research.