Abstract: This article introduces the specific practices of Nanjing University in conducting science popularization work in deep cooperation with the school under the background of the “double reduction” policy. The science popularization base has established the principles of promoting the spirit of scientists, deeply integrating science popularization activities with in-class education, and carrying students as the center. All science popularization education activities are designed based on these principles. Some experiences in resource opening, teacher supply, curriculum development and so on are summarized.

Key words: Popularization of science, Double reduction, Chemical experiment teaching center