Abstract: The Dependence of Art and The Independence of Art is the main difference between the west classic aestheties and modern aesthetics, the wide gap between “The Research For The Inside of Literature” and “The Research For The Outside of Literature”was caused by the difference. The Tartu School and Lotman introduced the biology to the aesthetics and treated the Literature and Art as independent being, they linked the Literature and Art to the real world with “ex-text” and “cultural-chain”, so they resolved the quarrel between The Dependence of Art and The Independence of Art and strode across the wide gap. Then the west post-aesthetics returned to cultural research.