Duplicate checking refers to comparing the texts of a paper to find out the similar parts in the text, that is, the repetition rate. This is to ensure academic impartiality and independence and prevent plagiarism or plagiarism. The same is true for graduation thesis duplicate checking, which aims to test students' independent thinking and innovation ability.

Schools and institutions may have different requirements for duplicate checking, but usually the contents of duplicate checking do not include the appendix. Because the appendix is not the main part, original and rarely copied relative to the main content of the paper, it generally does not play a decisive role in duplicate checking.

However, in some cases, if the thesis instructor clearly stipulates that it is necessary to check the appendix, students should also comply with the relevant requirements. In addition, the contents of the appendix also require students to pay attention to literature citation and source indication to ensure academic standardization and transparency.

When using duplicate checking report, students need to treat their test results rationally. The repetition rate of 20% does not mean that there is serious plagiarism in the paper, but it may also be caused by normal situations such as quotation or sentence repetition. Therefore, when the repetition rate is found to be high, students should think and modify independently according to their own situation.

Generally speaking, the common practice of duplicate checking of graduation thesis without appendix is generally recognized in academic circles. When writing a paper, students should pay attention to the originality of the main contents of the paper and the citation of documents, and actively avoid plagiarism and plagiarism.

The main purpose of duplicate checking of graduation thesis is to curb students' academic misconduct. Academic misconduct will seriously affect academic innovation. The so-called paper duplication checking is to compare and detect the similarity between the submitted papers and the data in the system database through the paper detection system, which has become an important means to prevent academic misconduct and has been widely used.

Most colleges and universities generally require that the total similarity of undergraduate papers is less than 30% to be qualified. If the total similarity rate is greater than 30%, it needs to be reworked, and you can apply for re-examination after modification.