The text is the core content of graduation thesis, including introduction, theory and conclusion. The introduction mainly explains the reason and significance of studying this topic, and should be written concisely. To make the topic of discussion clear and specific, sometimes it is necessary to write some historical review and current situation analysis, and what supplements, amendments or developments I will have, and briefly introduce the argumentation methods. This part is the main body of the paper, which expresses the author's research results and mainly expounds his own views and arguments. In this part, we should use sufficient and powerful materials to explain our own views and accurately grasp the internal relationship between the levels and paragraphs of the article. A long paper often adopts the method of combining reasoning (that is, the writing method of gradually expanding one argument to another) and sub-argument (that is, juxtaposing several sub-arguments subordinate to the basic argument and discussing them one by one). The conclusion part is the conclusion part of the paper. It is necessary to write the results of the demonstration in a consistent way, and at the same time write the prospect of the research, and mention the problems that need further discussion or possible solutions. Reference refers to some articles or materials studied in the process of writing a paper, and the main ones should be selected and listed at the end of the article.