First of all, high self-citation rate does not necessarily mean high-quality papers. Sometimes, the author may overquote his own research results to show his research influence and contribution. In this case, the high self-citation rate may reflect the author's overconfidence in his own achievements and ignore the reference value of other related studies. In addition, the high self-citation rate may also be due to the narrow research topic of the author, which leads to the fact that he can only quote his own research results. In this case, the high self-citation rate does not mean the high quality of the paper.
Secondly, the low self-citation rate does not necessarily mean that the quality of the paper is high. Sometimes, authors may avoid quoting their own research results for fear of being considered as repeated publication or plagiarism. In this case, the low self-citation rate may reflect the author's respect for academic norms, but it does not mean that the paper is of high quality. In addition, the low self-citation rate may also be because the author has a wide range of research topics and needs to quote a large number of external documents. In this case, the low self-citation rate does not mean that the quality of the paper is low.
To sum up, the self-citation rate has a certain relationship with the quality of papers, but it is not absolutely positive or negative. To evaluate the quality of a paper, we should comprehensively consider many factors, such as innovation, logicality, sufficiency of argumentation, rationality of experimental design, etc. At the same time, we should also pay attention to whether the author follows academic norms, such as avoiding plagiarism and repeated publication.