1, comprehensively and correctly grasp the situation of the problems to be studied, help researchers choose research topics and determine research directions, and provide basis for scientific research topics. By consulting relevant literature and collecting existing data related to this specific research field, the problems to be studied are systematically and critically analyzed.

2. Provide scientific basis and research methods for educational research. Literature is an effective way to track and absorb academic thoughts and latest achievements at home and abroad, understand the frontier trends of scientific research and obtain new information. To carry out educational research, we must understand the latest theories, means and research methods at home and abroad.

By consulting the literature, inspired by the relevant research results in the past and present, we can not only find clues to get scientific answers to the subject, but also concretize the concepts and theories within the research scope, and also provide convincing rich facts and data for more scientific argumentation and make research conclusions. Based on reliable materials.

3. Avoid duplication of work and improve scientific research efficiency. Literature provides information for scientific research, so that researchers can fully possess this information, so as to avoid doing the problems that have been solved by predecessors, repeating the correct views that have been put forward by predecessors, and even repeating the mistakes that have been made by predecessors. It is these important functions of educational literature that determine the necessity of retrieval in educational research.