George Bernard Shaw's Mrs. Warren's profession is around Mrs Warren's profession is. With the development of the story we find out that she is a brothel owner. This profession violates ethics and results in the rupture between Mrs Warren and his own daughter Vivian. Based on the Angle of ethical literary criticism to interpret the "ethics choice", "ethics identity" and "ethics consciousness" in the story. Thus,through reading this drama to reveal the reasons of characters’ tragedy and the ethics features in the drama.