In order to explore the relationship between science popularization and scientific and technological innovation, evaluation indicators are constructed for the level of science popularization and scientific and technological innovation, taking 31 provinces, autonomous regions and municipalities across the country as the research objects, and factor analysis is used to calculate the level of popular science and scientific and technological innovation in each province from 2015 to 2019 , and the coupling coordination degree of the two systems is calculated based on the coupling coordination model. The results show that the national science popularization and scientific and technological innovation have steadily improved, but the problem of imbalance between regions is still prominent.The coupling coordination degree of science popularization and scientific and technological innovation has increased year by year, but more than one third of the provinces are still in the stage of imbalance,and a virtuous circle of science popularization and scientific and technological innovation has not yet formed.