The kernel of Science of literature, as a sub-discipline of the Chinese Literature, is the study of its literary theory.

“文艺学”作为“中国语言文学”下的二级学科，其核心就是文学理论的研究。

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But the concept, such as the science of literature, the science of art and the literary theory, is being vaguely used, and even is replaced by each other. There is no clear consciousness of concept.

但我国的文学理论研究习惯于模糊性地运用概念、术语，甚至关于文艺学、艺术学与文学理论等学科基本概念，都很少有清晰的论述，在使用中往往都是并用或相互替代，并无清醒的概念意识。

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