First of all, the General Administration of Press and Publication does not divide the administrative level of periodicals. Journals published by general academic papers are classified by colleges and universities according to the competent main units. The periodicals headed or dominated by national ministerial units are national first-class periodicals; Journals sponsored or led by national societies or associations are national secondary journals. The above two periodicals are collectively referred to as national periodicals. For example, Director of Chinese Medical Journal: Chairman of China Association for Science and Technology: Chinese Medical Association, which is one of the leading medical health journals in China, is a series and core journal of Chinese Medical Association, and its English version is SCI. There is no doubt about the quality of periodicals, but if they are classified according to their grades, they are national second-class periodicals (thus, the grades of periodicals have nothing to do with the quality of periodicals). The classification of provincial periodicals is the same as that of national periodicals: the director or person in charge of the provincial department is a provincial periodical; Provincial associations or societies, etc. , are provincial secondary journals, collectively referred to as provincial journals. If you have any other questions, please keep asking.