Abstract: From the perspective of how is subjective' sports aesthetics possible,and the method of logic induction and deduction,gradually analysis of Kant's Critique of Judgment.some conclusions as following:1)preliminary demonstrate twice-space theory of sports aesthetics.Once aesthetics space is what the aesthetics subjects and the appearance with the purely aesthetics appreciation,and produce free beauty,no disinterested,no concept and no purpose,the second aesthetics space is what the aesthetics subjects mixed their own aesthetics experience with not purely aesthetics appreciation,all realized that the main body objects is attached beauty.2)The principle of equality of aesthetics pleasure,that is the subject once aesthetics,the subject construct aesthetics relationship between the object appearance and once aesthetics space,and produced aesthetics pleasure is equality for all.This will provide theoretical support for sports aesthetics appreciating from different groups.