The paper is marked in red, indicating that this part is consistent with the existing academic achievements and needs to be revised. Copying others' achievements is the most taboo in the academic field, which is also an inevitable requirement for creating a good academic atmosphere and promoting the benign development of academics. Therefore, when academic achievements are completed, they must pass the inspection of duplicate checking. Paper duplication checking is to put the target paper into a paper library covering all academic achievements, and then the system will compare each part of the target paper with the existing academic achievements in the paper library sentence by sentence. Once duplicate content is found, it will be marked in red, indicating that this part of the content is suspected of plagiarism and needs to be revised.