Innovation is a unique and necessary ability in the development of human society, and it is also an important direction of higher education teaching. As a kind of subject education thought, the theory of interdisciplinary can be interpreted from three aspects: the depth of discipline, the breadth of discipline and the integration of disciplines. The above three aspects can correspond to the reading of three categories of literature: “small disciplines”, “university departments” and “interdisciplinary”. Specifically, the “small subject” literature determines research issues, the “university” literature determines research methods, and the “interdisciplinary” literature determines research ideas. At present, there are still problems in the actual teaching of domestic universities that restrict the smooth reading of “three types of literature”. In order to solve these problems, we should start from expanding the campus discipline setting, opening up the school platform and conducting academic lectures, cultivation of innovative abilities, etc.