This novel is created by the famous novelist in nineteenth century—William M Thackeray,it also becomes his most wonderful work.The author describes the environmental background and kinds of people in upper class;in particular,Thackeray pays much word on an outstanding girl who is clever,pretty,diligent,and ambitious.I divide my thesis into several main parts,including her childhood,school life,marriage and social intercourse to elaborate Rebecca’s dual personality—extremely selfish self-awareness and complete feminist consciousness beyond herself. This novel is created by the famous novelist in nineteenth century-William M Thackeray, it also becomes his most wonderful work. The author describes the environmental background and kinds of people in upper class; in particular, Thackeray pays much word on an outstanding girl who is clever, pretty, diligent, and ambitious. I divide the main thesis, including her childhood, school life, marriage and social intercourse to elaborate Rebecca’s dual personality-extremely selfish self-awareness and complete feminist consciousness beyond herself.