Yes Duplicate checking is an important means to detect whether a paper is plagiarized, and it is carried out by using special duplicate checking software. By comparing the paper with the literature in the database, the software checks whether there are sentences, paragraphs or contents in the paper that are different from the existing literature. Therefore, the database of duplicate checking software contains all small papers, or there are many big papers and small papers, and duplicates will be detected when duplicate checking is carried out.