First of all, when writing the paper, many key sentences and professional vocabulary in many documents are referenced, which are highly similar to many articles and easy to be detected, resulting in a high duplicate checking rate. If they are all written by themselves, but the results of duplicate checking are still unqualified, it may be that sensitive language and sentences are used.

Secondly, the duplicate checking detection system is also very important in duplicate checking. Some detection systems are unprofessional, and some well-known detection systems are too expensive. Therefore, when we choose the duplicate checking system, we suggest choosing less expensive professional testing software to ensure the quality and safety of the paper.

Finally, if the duplicate check result of the graduation thesis is still unqualified, it means that some parts of the thesis may be too similar, the references are wrong, and the sentences are logically wrong, which leads to a high duplicate check rate, so the thesis will not pass.