Fanny in Mansfield Park has always been considered a model of morality and traditional customs by many critics. “Fanny’s strict adherence to her own ethical code places her as the moral center of her household” (Sturrock, 2006, pp. 176-184). Few scholars associate her with the independent or rebellious image. But by analyzing Fanny’s three choices from the perspective of Ethical Literary Criticism, it can be found that Fanny is not a follower of traditional values. She did not agree with the morals of money-worship, hierarchy, and parental authority at that time. Her disobedience makes her an “immoral” girl with an independent spirit.