Since the beginning of Western culture in the ancient Greek period, there have been numerous propositions about the "ultimate meaning" of the human self and the value of life. Western culture, rooted in the question of human beings, has been permeated with the anxiety of various definitions of "self" and the hope of falsifying the definitions through a certain "third force" in a specific era, in which the subjective consciousness and the embodiment of human nature are more important than ever. The subjective consciousness and the embodiment of humanity are even more important. However, if we trace this proposition back to its origin, does the "third force" have an unshakeable authority? Can its authority truly define what human beings are? If the "third force" is dissolved, will mankind make new discoveries about its own life? This project aims to discuss the relationship between the "third force" and the ultimate meaning sought by human beings by taking the example of "The Three-penny Opera" written by the German writer Bertolt Brecht. At the same time, literature has always been called "anthropology", and with the deepening of global multicultural exchanges, China will be more influenced by Western culture, in the contemporary era of materialism and money worship, it is increasingly important to think about the survival of human beings, the meaning of human beings, and the value of human beings. Today, when humanistic feelings are generally in trouble, the study of anthropology is invaluable. This shows that the in-depth study of anthropology also has essential practical significance for the development of our country. This research topic takes Brecht's Three-Cent Opera as the analysed text, and draws on the original language version, the Chinese translation version, as well as the adapted film version and the opera version, in order to analyze this topic in depth. At the same time, this project adheres to the basic theory of Marxism as a guide, while absorbing modern critical methods such as archetypal criticism and discourse narrative, making obvious innovations to previous research methods and concepts.