Induction: Draw general knowledge from the inference of individual knowledge, and draw conclusions that may be true from known premises.

Research methods combining macro analysis with micro analysis: macro analysis is the overall analysis of the problem, while micro analysis is the analysis of some or individual objects of the problem. When analyzing the causes of financing difficulties of small and medium-sized enterprises in China, we made a macro analysis from the perspective of external environment, policies and systems, and made a micro analysis from the perspective of small and medium-sized enterprises themselves and financing institutions, combining the three. ?

Interview: the basic research method to understand the market situation by asking the interviewer and the interviewee face to face.

4. Literature research method: By collecting a large number of relevant materials related to topics, problems or research topics in a certain field, a certain specialty or a certain aspect, and by analyzing, reading and sorting out, the latest progress, academic viewpoints or suggestions of current topics, problems or research topics are refined.

5. Investigation method: Investigation method is one of the most commonly used methods in scientific research. It is a purposeful, planned and systematic method to collect materials about the actual situation or historical situation of the research object. Generally, a large number of data are obtained by answering questions in writing or orally, and then a large number of data collected in the investigation are analyzed, compared and summarized to provide people with regular knowledge.