Abstract: Based on the analysis of Keats's converse acceptable aestheticism, the article explains the return to humanism after the criterion of judging good and evil is unbalanced. When human nature is lost, human begins to deviate from itself. All human species,society and reality may be presumed, fabricated and copied. The true, the good, the beautiful may be abandoned. Aiming at this, converse acceptable aesthetical poet-keats found "the beautiful is the true, the true is the beautiful" along the access of human nature.