The General Secretary Xi Jinping pointed out that “The science and technology innovation and science popularization are the two wings to achieve the innovation and development，and scientific popularization should be placed in an equally important position as science and technology innovation”，which profoundly interprets the dialectical complementarity between scientific popularization and science and technology innovation，and clarifies the status and role of science popularization in national development. However，how to effectively exert the function of the wing of science popularization in innovation and development，and find the practical model to serve the national development needs，is still a difficult problem in practice. Since 2018，Tianjin has begun to form a “universal science popularization” model in its exploration，placing universal science popularization at the height of “relating to the type，the fate，the high-quality and long-term development of the city”，and strives to promote the effect of universal science popularization “reflects on the overall competitiveness of a region. ” By vigorously promoting the practice of “Total-departments action，total-region coverage，total-media disse-mination，and total-people participation and sharing”，this model has significant achieved progress in deepening the reform of the popular science system and mechanism，and improving citizens’ scientific quality. Tianjin’s practice in universal science popularization is a vivid interpretation to the “both equally important” proposition，and explored a popular science innovation road that meets the actual needs of Tianjin development and the people’s life.