In this paper, conceptual metaphors are used as a tool. Based on the two basic metaphors of "epidemic disease is servitude" and "epidemic disease is war," this article analyzes the names, pathogenesis, pathogenesis, and treatment methods of COVID-19. Through analysis, it was found that the ancients recognized the pathogenic characteristics of the epidemic with the two characteristics of extensive involvement of the crowd and the deaths and injuries of the servants. This disease is the battle that Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2) invades the human body, and the human body fights back to defend. The rise and fall of the lung qi is an important turning point in the success or failure of this war, eliminating evil spirits is the basic strategy of this war. In addition, the author believes that in combination with the results of existing laboratory tests, the traditional Chinese medicine treatment of COVID-19 should consider the important effect of "phlegm" in the pathological process.