Literature was a form of art created by human beings. It used words, language, symbols, and other means to express the author's thoughts, emotions, and values. Literature included novels, poems, essays, plays, and other narrative literature works, as well as non-narrative literature works such as philosophy, history, psychology, and so on. Literature is diverse and inclusive, able to transcend different cultures, languages, and historical stages. The creative process of literature, including conception, writing, revision, and performance, required the author to have rich imagination, creativity, and language skills. The purpose of literature is to convey the author's thoughts and emotions through words, inspire readers 'thoughts and feelings, and promote cultural exchange and understanding. The course of literary theory is an in-depth analysis and study of literature, including literary forms, literary phenomena, literary schools, literary works, etc. It aims to provide readers with more comprehensive and in-depth literary knowledge and understanding.