In order to be published, all papers must be submitted to journals and magazines. At this time, the paper must be reviewed to decide whether it is suitable for publication. Diary. Com tells you that the review cycle of papers is different, and the review time of core journals is the longest, about 3-6 months, and it may be delayed for other reasons. General journals at the national or provincial level generally take about one week, while the review time for other journals generally takes one month. Most people are not familiar with the system and process of peer review, but only know why. According to the journal network, the process of reviewing papers is generally: preliminary review, expert review and finalization. Among them, the initial review is carried out by the internal editors of journals and magazines, and then it can enter the expert review, and then it can be reviewed by the editor-in-chief, and finally it can be released, which shows the rigor of peer review. The preliminary examination of periodicals and magazines is the basic screening. Generally, papers without major problems can pass, and the review mainly depends on expert review. In fact, every professional journal (or academic journal) has an editorial board in its editorial department. The director of the editorial board is generally an expert and scholar who has a certain reputation in the industry (or specialty). The principle for editors to choose reviewers is firstly the experience and education level of experts, especially the experience of experts. Secondly, it is the serious and responsible attitude of experts to peer review. Third, it is the peer review level of experts. Of course, the reviewer's academic qualifications and experience are different, and the review conclusion of a paper will be different. However, different angles of experts' reviewing manuscripts will lead to highly different evaluations of manuscripts. As an expert and scholar in a certain industry, you should have a comprehensive understanding of the academic trends and technical level of your major. The expert review mainly examines the contents of the paper, such as whether the viewpoints of the paper are correct, whether the principles, formulas, derivation processes and conclusions adopted are correct, whether the experimental data are different from foreign literature, and whether the references are up-to-date. To some extent, expert peer review is a correct evaluation of the academic level, technical level, innovation and advancement of the paper. When reviewing manuscripts, experts must conduct a comprehensive and detailed review of the contents reflected in academic papers, such as arguments, experimental processes, results and discussions, conclusions, etc. Experts should calm down, think seriously and rationally about different academic viewpoints and arguments, give correct and appropriate evaluation to the paper, and never speculate on the academic value of the paper.