According to the academic reference network, the annual blind review time of papers is in May. Blind examination of papers mainly depends on whether the topic of the paper has theoretical innovation or practical guiding value, whether the research methods and means are scientific, whether the quotations, charts and data are correct, whether the logic is reasonable, and whether there are problems in the text and format. Blind evaluation refers to a system of organizing expert group evaluation, that is, anonymous submission, which means that the evaluation tutor does not know who the author of the paper is. In this way, the false positive rate of scores is low, so this method is used in college marking.