1. The contents of the paper mainly include: cover, statement, Chinese and English abstract, table of contents, main symbol comparison table, text, thanks, references, appendix, original statement or authorization statement, and academic papers published during the study period. Among them, the body part usually consists of quotations, abstracts, chapters and summaries. The body part is the most important part, and then the paper thanks, keywords, appendices and thanks also need to be checked.

2. The content of paper duplication checking is roughly as shown in the above figure. The direct purpose of paper duplication checking is to detect the repetition rate of papers, from which the severity of academic misconduct in papers can be judged. The higher the repetition rate of papers, the more serious academic misconduct, and colleges and universities will stipulate the qualified standards for the repetition rate of graduates' papers. The higher the education, the stricter the eligibility criteria.

Criterion of paper review

In order to prevent academic misconduct such as plagiarism, ghostwriting and plagiarism, it is necessary to require the duplicate checking rate of papers.

The duplicate checking system mainly detects the contents in text form such as abstract, text, ending, sentence and table of contents. But the paper is not only composed of words, a complete and high-quality paper should also include data, charts, pictures or tables. This part of the non-text content is unnecessary in most cases, and some universities or journals with higher requirements will also check the non-text content.

Most colleges and universities require that the duplicate checking rate of undergraduate graduation thesis should not exceed 30%, while stricter colleges and universities will increase the duplicate checking rate to 20%, and the duplicate checking standard for master's thesis and doctoral thesis will be much higher. Most colleges and universities require the duplicate checking rate to be between10% and 30%, and the duplicate checking rate of doctoral thesis is between 5% and 20%. For professional titles, the re-examination requirements of advanced core journals are the highest, and the standard is less than 8% to 15%.