When writing the main part of the paper, the author should also understand the five basic requirements of the main writing. Only when the subject part meets the following requirements can the paper be hierarchical and targeted. First: discuss things according to customer facts, and remember to be subjective. After the author determines the theme, the arguments and material analysis expressed in the main part should be based on facts, remember subjective identification and add personal feelings, otherwise the paper will be too emotional and lack of argumentation effect. Second: stick to the theme. Theme is the central idea of the paper. When writing a paper, the author must remember not to be imaginative, to write wherever he wants, to focus on the theme, and to highlight the theme in any material refining and argument verification. Third: the layout is reasonable and the levels are clear. Any high-quality paper must give people the impression of fluent writing, reasonable layout, rigorous conception and thorough analysis. Therefore, the author should pay attention to the layout and hierarchy when writing the text of the paper. Fourth: the viewpoint should be innovative. The main part is the main position for the author to express and expound his views. Therefore, in this part, the author's point of view must be innovative, unique and distinctive, so that readers can remember it and be rated as a good paper.