Abstract: The bewilderment of sports knowledge can be understood as the question of "whether sports knowledge has been formed ?", in which what form of knowledge and which comes first in sports should be the question to be asked first of all. The controversy and development of contemporary epistemology has provided theoretical support for the solution of the bewilderment of sports knowledge. Grimen’s definition of knowledge makes it possible for the subjective behavior and experience widely existent in sports to be included in knowledge system. The dispute between Popper, Huck and Polanyi results in subjective and objective sports knowledge, while the later "practice turn" of epistemology by the Wittgenstein school establishes the basic status of subjective sports knowledge. The introduction of contemporary epistemological dispute into sports not only enriches sports with knowledge but also provides new research field for epistemology.

Key words: sports, Knowledge, epistemology