Blue Book on China’s Scientific Journal Development (2021) has the theme of “academic publishing in the open scienceenvironment”. Based on the major Chinese and international databases and first-hand official data, this book uses scientific methods to analyze the existing problems and to summarize the development process of China’s scientific journals. In thisbook, the authors introduce and analyze the general situation of China’s scientific and technological journals and researcharticles, present their overall status in the form of statistical key figures, and study the characteristics of the progress ofopen science, open science platform and open publishing progress. This work has thus drawn a picture of the transformation of international academic publishing in the open science environment. This Blue Book discusses the development trend of Chinese science journals in the open science environment, so as to provide reference for the founding and enhancement of the world-class scientific and technological journals in China.