In order to explore and master the writing rules and characteristics of papers, it is necessary to classify papers. Because the content and nature of the paper itself are different, the research fields, objects, methods and expressions are different, and the classification methods of the paper are also different.

Papers can be divided into theoretical papers, experimental papers, descriptive papers and design papers according to the nature of content and research methods.

There is also a comprehensive classification, which divides papers into four categories: thematic, argumentative, comprehensive and comprehensive:

1. monograph.

Based on the analysis of previous research results, this paper expresses opinions in the form of direct discussion and puts forward academic problems of a certain subject from the front.

2. Argumentative essay.

This is a paper aimed at others' views on an academic problem of a certain subject, with sufficient arguments, focusing on exposing its shortcomings or mistakes, and expressing opinions through debate.

3. Summarize the paper.

This is a kind of paper that introduces or comments on an academic problem of a certain subject on the basis of summarizing the research results of predecessors or present people to express their opinions.

4. Comprehensive papers.

This is a paper written by organically combining summary and demonstration.