In the process of reviewing papers, there are some matters needing attention. First of all, reviewers should only accept papers in their familiar fields. Secondly, the reviewer should take the time to read the abstract first, so as to know what methods the author used to solve what problems and what is new in the paper. Don't rush to evaluate after reading it for the first time. Read it again. Third, first evaluate the scientificity and correctness of the manuscript. Secondly, we should evaluate the writing situation of the manuscript and whether the expression is clear and accurate. Finally, reply to the reviewer's comments completely and don't miss any questions.