This paper takes the four historical fiction in different periods《Nose》, 《TARO CONGEE》,《One day of Nyizou Dayisi》and 《Qiushan painting》as the research object. The significance of the study is to examine the change of the hero's ideality and subjectivity. This is a matter of concern to previous researchers. This paper refers to Lacan's theory of desire, that is, the essence of desire is the lack of analysis of the 《Nose》《TARO CONGEE》, the ideality of the protagonist of the reasons for the desire of human nature is the desire of others, analysis of《One day of Nyizou Dayisi》hero ideality. The reasons for the formation of desire must go beyond the reality, analysis of《Qiushan painting》in the protagonist of the ideal to give up, in the study of the ideality at the same time examine the subjective state of the hero. Combined with these four works, we can draw the conclusion that the protagonist 's ideality in Akashihama' s historical novels is weakened and the subjectivity is enhanced.