Abstract: In 1930s, there has been a playwright master appeared in the history of modern Chinese drama, Cao Yu. He is well known to the world by writing a series of outstanding tragedy. It is worthy to inquiry and study his successful experience and the mystery of the tragedy creation. In particular, people should summarize and explore the pillars of all his great tragedies, his rich and profound tragedy concept. This is not only the need to enrich the Chinese tragedy theory, it also offers us a lot of knowledge about enhancing the tragedy creation thought level and the culture background, raising the tragedy creation level to a new stage. Keywords: tragedy; Tragic Conception; Cao Yu's concept of tragedy