Undergraduate thesis is an in-depth study and application of professional knowledge, and the research direction should be closely related to the major studied. You can consider the core courses, research fields and future development trends of this major. Secondly, we should choose a research direction with research value and practical significance. Undergraduate graduation thesis is not only the application of knowledge, but also the investigation of problem-solving and innovation ability. We should choose a research direction with research value and practical significance. This can be determined by understanding the current social problems, academic research hotspots or industry needs.