Henry James has successfully portrayed many innocent American girls,who undergo a lot in the cultural shock between America and Europe.And Daisy Miller is the only one,whose innocence and natural behaviours make her defy the European society persistently.However,due to her sudden death in the end of the novel,she is viewed more as a victim of the conflict of culture.This thesis holds that Daisy Miller is a positive heroine,who always sticks to her selfhood.As an American,she has the spirit of freedom and equality,and as a women,she plays the role of an advanced feminist,who pursues the gender equality in her relationship with men.Therefore,Daisy Miller can be considered as a martyr for selfhood rather than a tragical heroine.