This essay reinterprets Liu Kezhuang's poetic theory, based on the comparison between his poem selections and Zhen Dexiu's selection Wen Zhang Zheng Zong. Liu Kezhuang's poetic statements, full of contradictions, which puzzled researchers constantly, have been discussed and explained in the first part of this essay as a result of the flattery mood and the dominance of Zhu Xi School in late Southern Sung dynasty. In the second part, Liu's selections are compared with Zhen Dexiu's selection both in selection range and principles to reveal Liu's poetic disposition theory. Moreover, Liu's statement contradictions are analyzed textually and reinterpreted historically. In the end, a conclusion is drawn that Liu Kezhuang's poetic disposition theory emphasized individual emotions be the essential factor of poems, which should be expressed naturally and widely. To the contrast, Zhen Dexiu stressed the importance of moral principles and education in lyric writing. Liu Kezhuang's individual poetics is a significant effort for defending the essential feature of lyric poetry in the dominance of Zhu Xi School in late Southern Sung dynasty.