Graduation thesis is the last link of undergraduate study, which aims to summarize the achievements of learning major and cultivate the ability to solve practical problems by comprehensively applying the learned knowledge. Stylistically speaking, it is also an academic paper with certain significance for scientific research and exploration of practical or theoretical problems in a certain professional field. Through the graduation thesis, it can roughly reflect whether the author can use the basic knowledge learned between universities to analyze and solve a basic problem in this discipline. It is a symbol to measure the quality of undergraduate teaching and academic level. Of course, its topic should not be too big, its content should not be too complicated, and it needs some originality, so that it can better analyze and solve problems that are not too complicated in the subject field. When writing a graduation thesis, it is impossible to use all the professional basic knowledge of university stage studies, but some professional basic knowledge used within the limits required by the topic must be used accurately. In the process of writing a thesis, we should think more and think carefully, closely focus on the topic, and use professional knowledge to make the thesis stick to our own truth and make sense, reflecting the ability of comprehensively applying what we have learned to analyze and solve problems. Although college students' graduation thesis can't fully discover the truth that predecessors have not discovered, they should try to put forward some new opinions on the basis of predecessors' achievements. They shouldn't just repeat what their predecessors said. They shouldn't copy things from one place to another, make a new face and take others' achievements as their own.