Literature comprehensive research method is a method to obtain information by investigating literature according to certain research purposes or topics, so as to comprehensively and correctly understand and master the problems to be studied. Literature research methods are widely used in various disciplines. Its function is to understand the history and present situation of related problems and help to determine the research topic. Can form a general impression of the research object, which is helpful for observation and visit. You can get the contrast data of real data. This helps to understand the whole picture.
Case study method is a research method to identify a specific object among the research objects, investigate and analyze it, and find out its characteristics and formation process. There are three basic types of case studies: personal investigation, that is, investigation and study of a person in an organization; Group investigation, that is, to investigate and study an organization or group; Problem investigation is to investigate and study a phenomenon or problem.
Interdisciplinary research methods. The method of using multidisciplinary theories, methods and achievements to conduct a comprehensive study of a subject as a whole is also called "cross-study method". The law of scientific development movement shows that science is highly integrated in high differentiation and forms a unified whole. According to the statistics of relevant experts, there are more than 2,000 disciplines in the world, and the trend of differentiation between disciplines is still intensifying. At the same time, the links between disciplines are getting closer and closer, and there is a unified trend in language, methods and some concepts.