Because different magazines require different paper duplicate checking rates, in principle, it cannot be higher than 30%. Of course, the duplicate checking rate of some academic papers will be stricter, and some require that the repetition rate should not be higher than 10%. But the premise is that the document must meet the requirements, so some problems need to be clarified before submission. Because some industries will involve various types of professional vocabulary, it is difficult to control the level at a low level, so different standards will be set when submitting papers. If the papers are published in core journals, the standard of search processing is about 5% ~ 10%.