Firstly, according to the nature of research content and research methods, the paper is divided into theoretical papers, experimental papers, descriptive papers and design papers. Liberal arts students generally write theoretical papers, while science students generally write experimental papers, descriptive papers and design papers.

Second, according to the nature of the discussion, it can be divided into: establishing the topic and refuting the topic. Writing a thesis is to expound and demonstrate one's views and opinions from a positive perspective. Refuting a thesis refers to establishing one's own arguments and opinions by refuting others' arguments.

Thirdly, according to the size of the research problem, it can be divided into macro papers and micro papers. Macro-thesis has extensive research and influence. However, the micro-thesis studies specific problems and has a narrow influence.

Fourth, comprehensive classification: thematic and argumentative.