Popular science articles, as the name implies, are loved by the public, and the audience of knowledge should be the broad masses. Knowledge is not professional, suitable for all ages, mainly to spread some big knowledge. Scientific and technological literature is a research paper, which is more professional. For the simplest example, Yilin and Reader, which focus on novels, belong to the category of cultural popularization, and their functions are to popularize scientific knowledge. Research journals such as Journal of Peking University, Journal of Physics and Nature are scientific and technological documents. It is research with a certain scientific basis, and then some achievements are made, which lies in discovering new knowledge.