One kind of periodicals is the national core periodicals, the other is other core periodicals except the national core periodicals, and the third is ordinary periodicals.

According to this classification, it is basically the classification of local institutions, and the classification of each place is not the same. Classification of general periodicals:

1, classification of periodical authorities.

2. Whether the journal is published.

3. Grading by periodical quality.

Papers published in medicine:

Theoretical scientific papers are scientific records of new scientific research achievements or innovative ideas and knowledge. A scientific paper is a scientific summary of the new progress made by applying known principles in practice. In other words, without new ideas, viewpoints, achievements and conclusions, it is not a scientific paper. Scientific papers are scientific records and historical documents of scientific and technological progress. How can papers without originality reflect the development of science and technology?