In post-modern history context, on one hand, the human subject is strangled by fence of culture ideology, restricted by thinking mode of rationalization and logicalization. The aesthetic feeling and aesthetic impulsion in human heart are dissimilate; and the poetic hope of life and ultimate faith of aesthetics are lost; on the other hand, people follow the exchange and symbol value of mass consumption society closely, and then generate the wallow in material desire and vigorously chase luxury and the objective such as knowledge, merchandise, honor, benefit and power, which lead to tragedy result of aesthetic materialization. The human subject loses the aesthetic desire and aesthetic sense and become the slave of sensorial desire, technical demand and consumptive activity. Base on situation of history and psychology, aesthetics appeal for rebuilding poetic subject, to put it more specifically, people should refuse the physical desire and aesthetic desire of illusive and stodgy, restore and strengthen genuine aesthetic desire, purify and sublime the psychological motivations of aesthetic desire. Thus, we must acquaint the logical relationship and mutual value between poetic subject and aesthetic desire.