In the process of publishing scientific research papers, formal peer review can be conducted at the following three time points. One is before submission, for example, the author submits the article to a pre-printed website, such as ArXiv, or F 1000 research, PeerJ and Figshare, so that other colleagues can read it and get feedback, and then submit it to the journal after revision. If you publish articles on websites and blogs, it may count, but the opinions you get will not be very professional. The second is the most common peer review after submission, which is also divided into two ways. One is blind peer review. The reviewer knows the author's information, but the author doesn't know the reviewer's information. Blind peer review is often criticized for being susceptible to gender and prejudice, which is not objective and fair enough. Double-blind peer review means that the reviewer and the author don't know each other's information, so there is no prejudice, so giving is an objective method. There is also peer review after the publication of the article. For example, other authors can comment on the published article and correct more important mistakes.

Peer review has existed for more than 200 years and still plays a vital role in scientific research and publication. From the point of view of journal editors, peer review can effectively filter out low-quality articles, and at the same time, it can also point out the problems existing in submission and put forward suggestions for improvement, which plays a mainstay role in ensuring the quality of journal articles. For reviewers, being able to review authoritative journals is not only a contribution to the whole field, but also shows their position in this field. After peer review, the author of the article can confidently say that the article has passed the test of peers and there are no major problems.